How to forget someone using sexually abusive language against you in social media?

Today I saw a video on Instagram from my country where an elderly man was harassing a minor girl in a public transport and she slapped him. The man posting it had said that she should've waited for the police instead of taking action herself. I commented that she must have been really fed up with such things and decided to do this. Also it's a fact that most sexual crime complaints in my country aren't treated seriously so it's not like the police would have done anything much.

Few hours later when I checked my notifications I saw that the guy has replied me with a long paragraph saying that people always want to harm weak targets like the elderly man. He also referred to my private parts and said that seeing a poor man in distress I'm opening them up. Then he commented that getting f***ed by a room full of people (he probably meant it a metaphorical way, to suggest that I'd only understand his situation if I get beaten up by masses) would teach me my position.

The comment had likes. I reported it and meta deleted the comment. However, it ruined my day and I feel kind of violated. I have never ever been talked to that way. How do I feel better? I even ignored my pets.

How to forget someone using sexually abusive language against you in social media?
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