The best way to avoid this type of thing is to not identify as white. Also, bonus points for getting offended by stereotyping if you get automatically assigned as white.
I'm not talking about trolling, I mean I literally do not self identify as "white". It is not a race, I am not part of it, and I have no allegiance to it. There is nothing about arbitrary groups of other white people that links me to them in any way. I am not responsible for what skinheads or neo nazis or communists or Amish believe or think just because our skin is radiometrically similar. I don't have any guilt either. I have more in common with many black Americans than I do with many "whites" across the world.
Acceptance of the idea of a "white race" is playing into the hands of those who want to lump together and divide us according to their own master worldview, and it represents regression in race relations.
It's also intellectually sloppy. I would rather we all try to move beyond race consciousness and focus on more meaningful commonalities and differences. But if I WERE disposed to slicing and dicing people on the basis of race, I would do it much better.