When popular Latino singer Valentine Elizalde was gunned down after a concert in Reynosa, Mexico last week, plenty of people online saw it coming, thanks to a YouTube photo montage of bullet-riddled bodies set to Elizalde's hit song "A Mis Enemigos" ("To My Enemies").

The video, originally posted three months ago, was meant to taunt supporters of the Gulf drug cartel, which is currently feuding with the rival Sinaloa cartel over smuggling routes into the United States -- Elizalde, who is from the Sinaloa region and wrote a song in tribute to the Sinaloa cartel leader, is considered to be a victim of that conflict.

Since his death, Elizalde has been both mourned and mocked online, Sinaloa and Gulf supporters exchanging taunts via YouTube comments. There's even a clip of the deceased Elizalde on the autopsy table, shot with a cell phone by morgue attendants, laughter audible in the background. Whether these online conflicts flare into more real-world violence remains to be seen, but in the meantime it's fascinating to see one man's website become another man's weapon.