What does the group antifa believe in or stand for? what is their purpose?

I'd like to make it known that I'm biased against them as to not confuse anyone. Antifa is a loosely organized alt-left leaning organization that protests violently though sometimes nonviolently. Their protests include topics ranging from BLM and police to former president Donald Trump and his supporters. Thay have been prone to violence in the past all with the excuse of "fighting fascists and neo-nazis" when in reality, They like the chaos. I can't blame them for it either. Chaos is fun until someone you love gets hurt. They'll hurt anyone they deem as racist or a fascist going as far as to doxx, harass, and physically assault them in public. They claim to be against fascism but use the same tactics and methods as their supposed enemies. I understand them to be so anti-fascist that they've become fascist themselves. Here is the dictionary definition for you. "a political protest movement comprising autonomous groups affiliated by their militant opposition to fascism and other forms of extreme right-wing ideology."

answer placeholder because the system is messed up

what class is this for i can then