This is a big problem on the border. There have been a lot of drug related killings this year. So many that the US has put out a warning to Americans crossing into Mexico. The Mexican govenment is furious to say the least. They, the Mexican Government, claims this is all America's fault. They claim that if we didn't demand drugs, there wouldn't be a problem.
For those of you interested go to http://www.el-universal.com.mx then click on the left corner English. There is a huge article about this problem.
I've yet to hear a compelling argument to the contrary.
One important piece of advice --- if you're driving near the border or anywhere near it --- don't drive a vehicle a drug cartel member or family member of one of them might drive --- drug cartels are pretty careful to get the right target -- but every now and then there is a case of mistaken identity. That means you're safer if you drive an affordable car.