I probably wouldn't do anything. I recognize that people have different viewpoints and opinions on things. I try hard to learn about those other viewpoints rather than getting upset. Its good to engage in a healthy discussion with others, but only if both parties are making intelligent arguments and haven't resorted to slander and name-calling.
Sometimes people post things to deliberately get a rise out of others. This tactic helps boost traffic to those articles because it is controversial (I don't condone this method by the way). Since you posted a question about the hub, it proves that tactic is working. Personally, I would just skip over it and find something nicer to read.
If you feel that the hub is abusive, slanderous, or untrue, you should flag it so that the moderators can check it out and remove it.