Styles associated with Hard style martial arts?
To me, this question fails on two points. First of all, it's got two separate questions, what martial arts styles are "hard" and how to figure out if a Krav Maga class is authentic. Secondly, it's got an unhelpful definition of "hard" that has apparently provoked a decent amount of rancor over the idea of "martial arts focused on severely injuring others". However, since I've voted to close, it's gained a 500 point bounty.
What do people think? Is this a good question for the site?