A biker gang war was set off in January 2010, Vagos MC members fought Hells Angels MC members in Santa Cruz, California for turf rights to hang at a Starbucks in town. Then in August, 2010 in Chino Valley, Arizona, Vagos members shot at a house owned by the Hells Angels during a party, leading to a firefight with at least 50 rounds shot off, and 27 people arrested.
A year later, Jethro Pettigrew, President of San Jose Hells Angels (also the fifth-ranking member nationally), was down in Sparks, Nevada for Street Vibrations Rally. On Friday September 23, 2011, a fight broke out in John Ascuaga's Nugget casino between Vagos and the Hells Angels. Shots were fired on both sides, and during the fight, Ernesto Gonzalez, ex-president of Vagos Nicaragua chapter (but then San Francisco resident), shot and killed Pettigrew. You can watch court testimony and surveillance footage of the fight here (for the altercation footage, jump to 3:17).
The next day, in the same town, a Vagos member was shot off his motorcycle, leading the mayor of Sparks to declare a state of emergency in his city.
Pettigrew was buried at Oak Hill Memorial Park on Saturday, October 15, 2011, and there 4,000 or so people attending his funeral plus a heavy police presence due to concerns of continued rival gang threats. A fight broke out among the funeral attendees when Pettigrew's good friend, Steve "Mr. 187" Tausan, sergeant-at-arms for Santa Cruz chapter of Hells Angels, called out a fellow Hells Angels member Steve Ruiz for failing to protect Pettigrew in the fight in Sparks. Tausan and others were beating Ruiz, and from the ground, Ruiz pulled out a gun and shot Tausan. In a matter of minutes, Tausan was put into a car and driven to the hospital (he was DOA), someone else put Ruiz in a car and drove him away from the cemetery, and other attendees destroyed the crime scene, washing blood away with water.
Ruiz was on the run until finally turning himself in to police in February 2012, but in the days following the funeral murder, police suspected that Ruiz may have been put in Pettigrew's grave during the melee, and dug up Pettigrew's grave a couple days after he was buried. Tausan, a former Marine and professional boxer, was buried with combat knife in hand during his October 29, 2011 funeral at the same cemetery as Pettigrew, former football great Jim Brown attended, and Sonny Barger shoveled in the last bit of dirt into the grave. Here's some footage from the funeral and here's a memorial video made for Tausan after his death.
For the Pettigrew killing, Gonzalez was sentenced to life with possibility of parole on October 3, 2013. Gonzalez was represented in court by David Houston, a prominent defense lawyer in Reno whose past clients have included Hulk Hogan, "Girls Gone Wild" video empire founder Joe Francis and Liberace's ex-lover, Scott Thorson.