It wasn't drug users. It was homeless people. It's in the screenshot that's on this forum. He said they should be chasing homeless people off the trains. "Clarification" was later. It was pointed out to him homeless people and drug users aren't even one and the same (a poor mistake I saw you made in your comment as well).
If you didn't even see the comments, why are you defending them? You're interpreting them (oddly without having seen them I guess) in a braindead way to assume no malice or negativity were in the comments.