To be fair I don't think Hal is the only one who gets treated badly over Twitter, though. The same can be said for John on Twitter. The difference is that there has been a lot of racist comments after John on there. Not only this, but imagine making a comment on Twitter only saying
John Stewart is my favorite Green Lantern or
I like the character without even bringing up Hal. I've seen users get ridiculed, harassed, and attacked for making comments like that claim that no one is as good as Hal Jordan blah blah BS. In fact, there's been some here on this site as well where there was racist comments towards John Stewart, but I do know that a poster has been banned on these forums for the racist comment that was made after John. I guess some people can't accept that a black hero can be the face of the Green Lantern franchise only for a season. It's sad
I started seeing more of it every since John was pushed in the Infinite Frontier era.