Well I'm 100% positive no democrat wants to get rid of the First Amendment, and Id challenge you to find any evidence that most of the modern left (or even a large portion of them) want to get rid of the first Amendment.

Hate speech laws will be the end of First Amendment. The left utterly hates free speech, they even burn Free Speech signs.

There's nothing inherently "classically liberal" about the 2nd amendment,

Liberalism is all about LIBERITY and limited government, the 2nd amendment is crucial in order to have a free and safe society.

but you have yet to substantiate your claim that democrats or the American left are racist.

Identity politics and affirmative action. You can cry about the alt-right racism but they are far-left collectivists who support big government and some support socialism.

It certainly aims to achieve or work towards equality, whether or not its effective is a separate argument honestly.

Equality and equity are not the same. Equality is liberalism, equity is anti-liberal.

Unfortunately, he did run as a Republican, and is currently advocating for Republican policies.

I think Democrats corruption with the whole Bernie fiasco shows us that it's safer to run as Republican.

In addition, during Trumps first year in office he refused to recognize Pride Month as other presidents had done,

And that's EXACTLY how it should be done. Things like PRIDE and Black History Months are divisive. And I absolutely hate Pride Parades, they DO NOT represent the vast majority of the LGBT community. It's almost like Pride Parades are there to create homophobia.

supported the baker in the famous Masterpiece Cakeshop Ltd. v. Colorado Civil Rights Commission case

Liberals support private property and free markets. Seems like you want an authoritarian government that points a gun at you and forces you to complete a capitalist transaction without CONSENT from both sides!