It's a pretty good dissection of the tactics:
The original commenter's words are not what are being attacked but by happenstance, I bet, the replier's are. The goal is to get this kind of crap in there with the dumb thought if it's just us "liberals" here. Then people will let their guard down and say stupid things. And while avoiding their evangel's who post this bullshit. They can act shocked and surprised by later comments on what was posted.
The thing to remember is that they do this for the people who are not here. They can say people are posting recipes for eating Jewish babies. They folks they are talking to will just take them at their word and repeat those words over and over again.
It is their all white all the time thinking that makes them not notice that to the left is rainbow.