The drug thugs have a get even approach, and zero tolerance. Any citizen in that march, will be subject to payback, and the police will help identify the people involved, and look the other way as heads roll.
Not saying they should not try to do what is right, but a little discretion, would keep innocent detached heads from swinging from bridges.
This is what happens once corruption in government is left unchecked. Our side of the border is not immune to this level of erosion, and we are on that path, I fear.
http://www.borderlandbeat.com/2011/02/4-thrown-to-deaths-from-bridge-near.htmlWalk into Walmart and just listen to the customers talking to one another. If you think there is a protective border between Mexico and Texas, think again.