First they refused to advertise on the racist site, and I did not speak up because I did not believe in a right to advertising revenue.
I think it's lost meaning starting with 2011 (thanks, Obama). See: http://chronicle.nytlabs.com/?keyword=racist
Notice how frequency of use spikes by 500% over last 5 years. That means that either the world has got immensely more racist, we started noticing it more or the word has just got diluted to where it doesn't mean anything (by a factor of 5, to be precise).
I happen to think it's the latter.
Which derails your entire argument. Just because you call it out doesn't mean the word loses meaning.
I'd suggest you read this piece by a someone who you can relate to - a "member of a desperate and discombobulated coastal elite" that discusses how definition of the term varies:
http://www.slate.com/articles/news_and_politics/politics/201...