First, I think the issue being debated here is whether such a site is ethically/legally? required to follow its own guidelines. Pursuant to that, here are the relevant rules from this site.
QUOTE
The posting rules for redstate.org are as follows:
# No profanity.
# No personal attacks.
# No harassment or demonization of a particular individual.
# No disruptive behavior or off-topic remarks for their own sake.
Banning for ideological reasons will take place only in the cases of fundamentally anti-American ideologies.
Amlord posted the other relevant section above, the key sentences being....
QUOTE
Pursuant to the mission statement, this site is explicitly meant to serve as a conservative and Republican community. Postings, comments, etc., contrary to this purpose fall under the rubric of "disruptive behavior" and will result in banning.
They also explicitly state what is probably tacitly assumed anyway...that they are the sole arbitrers of any dispute (so, basically, they can do what they want, regardless of the stated rules).
From their mission statement....
QUOTE
RedState.org is focused on politics, and seeks the construction of a Republican majority in the United States. We hope to unite serious, innovative, and accomplished voices from government, politics, activism, civil society, and journalism to participate in this work
Taking all three of these into account....
I don't think this post explicitly violated the stated 'rules', but that it did fall under the 'disruptive behavior' description. So, they are probably 'off the hook' in their actions, in my book. They want to be color blind, in fact have that as their stated mission, and have the right to be so, and even explicitly state this in their rules and mission. Now, feel free to dislike or criticize their policies...but it doesn't seem to me they're violating them.
I think the fact that this occurred on the Internet masks the basic interaction that took place. If you walked into a meeting of Republicans meant to build momentum for their policies, and tried to make a similar discussion, would you be surprised if you were tuned out? That's basically what happened here...it just took place over the Internet. Hecklers/dissenters are seldom welcome at such events.