White people ruined the world through colonization. I'm of Swiss origin and this really gets at me because what the hell did the Swiss do to Africa? What did the Swiss do to the Native-Americans? Blame the British, French, Dutch, Portuguese, Spanish, and Germans if you really feel like blaming someone. It's like saying brown people caused 9/11 (another stupid misconception).
Also that bisexual people must have sex with both genders at least once in their lives, or that they crave threesomes, or that they're more likely to cheat.