What question(s) take you from calm to pissed off, spitting mad in under 5 seconds?

What issue or questions can make you go from calm and civil to pissed off, fire breathing, lava smoldering, hot as a pistol mad in 3.5 seconds or less? It seems from my experience, my questions and following others, that there are certain questions or issues that just irks the heck out of some people, here are some not in any certain order I have seen that 80% is like shooting off Roman candles in a hay barn:

• Believe in God
• Atheism
• Abortion
• Bush vs. Clinton
• Obama’s White House
• Crime and punishment
• School Vouchers
• Taxing the rich –more than they are now—.

Those are just a few I see people who are calm and collected on other questions just go ape s***, when one of those come up. Which is yours? What question(s) you just can’t see with out having a knee jerk reaction and going off like a powder keg atop a stack of dynamite?