They could get life, but they won't.

If they're tried as adults, a life sentence is the maximum they could ever get. But even then, almost all life sentences in the US are indeterminate life sentences, which means that a person can easily qualify for parole after 15 years in jail, and even less than that if they behave while they're incarcerated.

I say jailtime is totally in order, since this crap goes on constantly. And seriously, if you're dumb enough to post a video of you committing felonies online, then you deserve to be punished even more than normal. XD

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