This topic came to my mind as I was driving home from work tonight. I was listening to Arghoslent in the car, a band I have discussed before. I absolutely love Arghoslent's music, they write killer riffs with a ton of energy. They basically sound the way that melodeath should sound had it not been watered down over the years.
Unfortunately, I find some of the lyrics of Arghoslent reprehensible. I can handle Satanic and Anti-Christian lyrics. But I have a hard time with racist and misogynistic lyrics. I really can not explain why those topics are so difficult for me, but they really are.
I do not normally judge a band by their lyrics, so obviously I continue to listen to Arghoslent despite my problems with some of their lyrics. That should not be construed as a tacit approval of their lyrics, just that I will not discontinue listening due to them.
Other bands I have issues with lyrically include a number of slam bands. Lyrics dealing with rape and necrophilia among other horrendous topics are pretty commonplace in that genre, which I find unfortunate.