Mexican forces were ambushed on Friday morning by the New Generation drug cartel in the western state of Jalisco, and after a three-hour gun battle 42 narco insurgents and one police officer were killed as reported by Jo Tuckman for The Guardian:
The New Generation Jalisco Cartel is one of the few that has been able to take advantage of the power vacuums created by the waning of others to both become an increasing important player in trafficking drugs and expand its territorial presence. In recent months the New Generation Jalisco Cartel has also garnered a reputation for particularly brazen challenges to state power.
Indeed, New Generation "has killed about 50 public servants in the past two years, kidnapping and murdering a congressman in 2014 and killing Jalisco's tourism secretary in 2013" as reported by Joshua Fechter for the San Antonio Express-News.
Earlier this month New Generation shot down a military helicopter "killing three soldiers, and set fire to buses, blocked roads, and attacked banks and gas stations in a sharp escalation of violence against the government" as reported by Joshua Partlow for The Washington Post.