"Fascist cunt": This is a deeply offensive insult accusing you of being a fascist (a far-right, authoritarian political ideology). It's meant to be highly derogatory and hurtful.
It's unlikely they have a nuanced understanding of fascism, and are probably using it as a general term of abuse for someone they strongly disagree with.
This part suggests they believe you are so greedy or selfish ("stingy" and "avarice" are related to greed) that you tolerate or even support fascists for your own benefit. This implies they think you prioritize money or power over moral principles.
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Other CBS NEWS polls show that the majority of Americans approve of President Donald J. Trump's performance.
I am really excited about the next four years! 🤗