Most definitely. Like @AleDeEurope said, it is always passive aggressive and indirect because they realize that if they were not, massive amounts of members would lose complete respect for them as human beings and whatever credit or care they receive from others would shrink.
Instead of trying (and failing) to be coy about the fact that they're racist, they would be better off addressing the fact that they make this world an uglier place.
Yes. I left a year ago or so because of it. One allowed a very anti-white question to stay up. I posted the same question but reversed it and it was taken down in 20 minutes. The other question was up for three days and then taken down. The mod is still on here.
Not racist mods but, years ago, I've had one actively harass me to go so far as to IP track me and delete my brother's GAG account. He's since been removed from the GAG team and GAG staff handled the matter very professionally, however.
I can't say racist because I have no evidence but I have seen definite personality clashes develop between admins/mods and certain users - Who was in the right we will never know in all instances but there are plenty of recriminations on both sides.
I've never had any interaction with any of the mods on a "professional" basis.
I had my question taken off because as an African living in America I asked what purpose the Black Lives Matter group really serve which is not as politically correct as asking the same of white lives matter. It PC Naxism gone mad.