What should terrify you is that "most of it" is highly contingent on context. "I can excuse racism, but I draw the line at _____," is a real thing. (Last week,

What should terrify you is that "most of it" is highly contingent on context. "I can excuse racism, but I draw the line at _____," is a real thing. (Last week, it was "egg prices.") Never underestimate people's willingness to ruin or end your life, and the lives of those they can put in a box with you, over something that is transitory and/or fixable. Genetic discrimination is just another, perhaps more versatile, box.