So, /u/marisam7 compiled this post detailing why Trump is an authoritarian fascist, for which I commend their efforts. However, there may be some who don't know the defining aspects of fascism and how Trump's policies fit in them like a hand in a glove. Hence, I'll link this article, which outlines the 14 defining characteristics of fascism as noted by Dr. Lawrence Britt. With that in mind, I'll also note down the points listed in /u/marisam7's previous post, alongside each of the 14 points I find relevant.

Note: To save my time, I've only noted down points that pertain to the direct actions of Trump, not to those of his friends/party members/supporters. And I am aware that an action of Trump might fall under multiple characteristics of a fascist regime, however, I've only listed it under the characteristic that I find most relevant. (Edit: for the points already covered in the /u/marisam7's post, you can check out their post for the links supporting each point)

• Disdain for the importance of human rights
  - Trump openly calls for the U.S to commit war crimes and advocates for the murder of innocent women and children.
  - Trump doubles down after veterans speak out claiming U.S soldiers would not commit war crimes or torture children even if ordered to. Trump responds with, “They’re not going to refuse me. If I say do it, they’re going to do it.”
  - Trump on torture: “Even if it doesn’t work they probably deserved it anyway.”
  - Trump renews calls for torture citing public executions and mass rape committed by ISIS promising for the U.S to do the same, “fighting fire with fire.”
  - Trump says Geneva Conventions a problem and needs to be changed since, US soldiers are to afraid to do their job due to laws which outline the definition of war crimes.
  - Trump says the Chinese government "showed strength" in response to the Tienanmen Square protests in which they massacred between 250 to 3,000 civilians and peaceful protesters.

• Identification of enemies/scapegoats as a unifying cause
  - Trump tweets anti-Semitic Hillary Clinton picture created by Neo-Nazis.
  - Trump's Muslim plan unconstitutional.
  - Trump encourages his supporters to use violence, again and again and again.
  - When asked for comments on two of his supporters who brutally beat and urinated on homeless man, Trump responds by defending the men as just being “passionate”.
  - Trump defends his supporters attacking man with, “He was obnoxious maybe he should have been roughed up.”
  - Trump tells crowd he would love to punch protesters.
  - Trump may pay legal fees for supporters arrested for assault.
  - Trump brags he could murder someone and still not lose support.
  - Trump responds to questions about violence committed by his supporters with: “People come with tremendous passion and love for their country. When they see what’s going on in this country, they have anger that’s unbelievable. They don’t like seeing bad trade deals. They don’t like seeing higher taxes. There’s some anger. There’s also great love for the country. It’s a beautiful thing in many respects.”
  - North Carolina Authorities consider prosecuting Trump over charges of inciting a riot.
  - Trump says if alive during World War 2 he “might have” supported the Japanese internment camps.
  - Trump considers plan to replace all Muslim TSA agents.

• The supremacy of the military/avid militarism
  - Trump threatens to shoot down Russian planes starting war with Russia.
  - Trump says he, "won’t rule out” using nuclear weapons in Europe.
  - Trump calls for a global nuclear rearmament.
  - Trump says he would declare a World War as President.
  - Trump's solution for high gas prices is to violate The Geneva Convention by invading several of America's allies in the Middle East and Africa unprovoked to forcibly seize the oil fields for himself.
  - When asked for clarification about the above mentioned plan to steal land from multiple nations on two different continents Trump responded with, “We’re not stealing anything. We’re taking.”
  - Trump says during debate he wants to invade Syria with 30,000 soldiers.
  - Trump runs TV add promising to seize foreign oil fields.
  - The man Trump hired to write his books for him says he honestly believes Trump would start a nuclear war if president.

• A controlled mass media
  - Trump pledges to open up Libel Laws on Newspapers in order to curb Freedom of the Press.
  - Trump jokes about murdering reporters.

• Obsession with national security
  - Trump's Immigration plan unconstitutional.
  - Trump's Muslim plan unconstitutional.

• Religion and ruling elite tied together
  - Trump fights against separation of Church and State.
  - Trump promises to violate freedom of religion and freedom of speech to force retail workers to say Merry Christmas again.

• Disdain and suppression of intellectuals and the arts
  - Trump files DMCA notices to get micropenis painting taken off the internet. Art galleries refuse to exhibit it after threats of violence from Trump supporters over the depiction.

• Obsession with crime and punishment
  - Trump promises mandatory Death Penalty for anyone accused of murdering a police officer despite no legal grounds to impose that.
  - Trump thinks lethal injection is “too comfortable” Wants to devise a more painful way to execute people.
  - Trump calls for the execution of children.

• Rampant cronyism and corruption
  - Legal Experts find dozens of Trump policy propositions that would violate the constitution. “Trump is threat to rule of law.”
  - Law Scholars agree, in order to enact plans Trump would have to violate First Amendment, Fifth Amendment, Bill of Rights, 14th Amendment, due process, equal protection, and the doctrine of enumerated and limited executive powers.
  - The ACLU made a list of all of Trumps unconstitutional propositions. (It’s 28 pages long.)
  - Trump holds event in Atlanta with GOP officials. Kicks the only black Republican official out of the event with no explanation.
  - Trump wants to appoint his sister as the next Supreme Court Justice.

Now, with regards to the 5 characteristics (out of the 14) I didn’t cover in the above listing, I will try to support those with points of my own:

• Powerful and continuing expressions of nationalism
  - Trump’s campaign slogan “Make America Great Again”.
  
• Rampant Sexism
  - Trump asserts that he is “pro-life,” during the 10th GOP debate.
  (Edit: I'm sorry for this comment. Instead, have this post with much better reasons as to why Trump is sexist)
  - Trump has made a lot of sexist remarks, asserting, amongst other things, that sexual assault in the military is totally expected when you put men and women together; women are conspiring to trick men; women are likely to trick a man and run away with his money; and that women fawn all over him because of his wealth. More sexist remarks can be found here.
  - A former vice-president of Trump Organization wrote an article about how Trump has adopted sexism as part of his agenda.
  
• Corporate Power is Protected
  - Trump accused of bribing attorneys to protect business interests. Also overlaps with “Rampant corruption and Cronyism”, above.
• Labor Power is Suppressed
  Okay so, for this one, I’m going to cheat a bit. Since Trump hasn’t spoken against labor unions and isn’t very open in his suppression of labor (at least, not to my knowledge), I’ll list out the poor conditions of workers employed by Trump-led corporations and businesses:
  - Illegal immigrants used by Trump in his construction projects (yes, Trump’s ready to exploit illegal immigration if it benefits him) were underpaid and mistreated. Hypocritical much, Trump?
  - Donald Trump lies about providing health care to employees.
  
• Fraudulent elections
  - Trump doesn’t really care if the election system is rigged, as long as it works in his favour.