Every once in while, I see a player with a username or an avatar that I feel is intended to insult or demean others. On rare occassions, a player will be outright offensive with the things that they type. I can't remember any specific examples, but I know I've seen it several times.
Unfortunately some people think that poker is a place where they can say and do whatever they want. I hate when people contribute to an environment intended to harm others. When you encounter this, make sure the people running the game know you care about maintaining a welcoming environment to everyone. I've legit stopped going to places because management tolerates too much.
As in life, you can encounter sexism, homophobia, racism, etc. in poker. It sucks that it can basically ruin the game and ruin the fun for everyone.