As a result of continued drug violence in their communities, Mexican citizens have been arming themselves to fight back against ruthless cartels and breaking the law to do so. In Mexico, regular citizens are not allowed to own firearms. When citizen, vigilante groups first started arming themselves against the will of the government, police and officials expressed concern and asked the groups to disarm. But now, after armed communities have proven to be an effective force to keep drug cartel activity at bay, the government is changing its tune in some areas of the country. More from CNN: