I don't want to kill myself, because I get more joy out of being a constant thorn in the sides of the corrupt, but as a teenager you may well feel differently. And for good reason. I felt more helpless as a teenager as well and did at times ponder whether a strongly worded suicide note along with suicide would achieve more than anything else I could have done.
That is no longer true, but that still doesn't change that I did experience those feelings.
Isn't it more important to address this than to (as perhaps legislators may try) simply prohibit media that deal with these themes?
See the most recent scandal in the UK where a debate kicked off around whether instagram et al should allow content from people showing off their self-harm, etc...