I bet the daily mail would have a field day with this thread. 
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The reality is that This story isn't even news. Teenagers have been doing stupid things like this for eternity. they always have and they always will. Does it make it right or OK? No. And especially if they were sixteen and eighteen as the articles have suggested I would wonder how on earth they had got to that age and done something like that. If they were mine I would come down on them like a ton of bricks.
But the antics of teenagers haven't previously been plastered all over the internet until the last ten years or so. But I bet that if you put a thread up here asking what stupid things mn'ers had done when they were teens and thought were funny the results wouldn't be dissimilar to putting glue on a chair to see what would happen, or putting a bucket of water on top of a door so when someone opened it they were soaked.
To suggest that this is a hate crime is hysterical and diminishes actual hate crime. To suggest that they should be jailed for the rest of their lives... Well, there are no words to respond to that kind of idiotic response.
Given the entirely OTT reactions some people have given on this thread, there are some who have a bloody shock in store when your kids grow into teens and start acting in a way which you feel would be inappropriate.
The girls in question here need a bloody good talking to. And who knows what, if any, consequences there will be for them legally. But actually, they couldn't possibly have known what the consequences would be of their actions. Super glue dries pretty quickly, within seconds. So another couple of minutes and there would have been no consequences from them putting the glue in that toilet.
They need a slap in the "wtf were you stupid girls thinking," way, as in, if they were mine they would get a bloody slap (metaphorically speaking.) but everything else just shows people up to be not very bright. At all.