How do I apologize to people on facebook if they only know me from their first impression?

[Joshua]

I was arguing with my cousin on facebook and called him a douche. The whole mass of people on my facebook basically called me a monster for calling my cousin a douche. He's not the victim here, I was the one who got harassed by my cousin on facebook
It's like how am I called the monster when it was my cousin acting like a tool

[anon]

Just say your sorry.

What else can you do?

Then, move on with your life & try not to repeat the same mistake.