The head of the Black Panthers is a lawyer. You can bet in the fine print there is enough wiggle room to not violate the letter of the law and ensure they NEVER have to pay any money.
I’m sure they don’t expect to pay. Only an idiot would expect to collect the cash if he killed Zimmerman. That doesn’t mean it won’t happen.
It's legal to yell 'fire' in a crowded theater - that's free speech. If no one panics and nothing happens beyond fellow movie goers telling the guy to shut-up - no harms been done. BUT if people panic, run for the doors and someone gets hurt - the first amendment protection is GONE. Same with this. Anything happens to Zimmerman, his parents, wife, dog etc - the Panthers will be sued as a business and personally.