My dude, they kill people and hang them from bridges in northern mexico. They kidnapped a school bus of kids and slaughtered them.
I realize the US has violence as well, but at least it's usually one deranged guy, or two gangbangers that have a beef. In mexico it's organized violence. This isn't the work of one crazy guy, it's the work of an organization which does it to terrorize the local population.
Seriously. Go look at the US state department guidelines for travel to various Mexican provinces. This is not just something that's overhyped in the media. If the state department is telling you that you should not visit large swaths of mexico, that's a stone sober assessment based on real evidence.
https://travel.state.gov/content/travel/en/traveladvisories/...