Assassinate a politician
From Create Your Own Story
A senator is running for office, so she is traveling the country. You usually don't care about those sort of things, but she is a big advocate for creating a National Hero Program. This would mean more heroes flying around trying to stop you, and as much as you love killing a hero, you would rather not have one try to thwart your plans every day. So the senator must go. Now how do you do this?