LAS VEGAS (AP) - Defense lawyers asked jurors Thursday to doubt the word of government informants and former Hells Angels who are expected to testify that the motorcycle club is a criminal ring that plotted a bloody casino brawl against a rival gang in 2002.''Snitches are notoriously unreliable,'' said Alan Caplan, the San Francisco-based lawyer for Michael Smullen, 48, a Pinole, Calif., resident and former president of the Richmond chapter of the Hells Angels. Defense lawyers for 11 Hells Angels being tried on federal charges for a brawl that left three people dead continued in opening statements to insist that the Hells Angels defended themselves after being attacked by rival Mongols at the Harrah's Laughlin hotel-casino.Two Hells Angels and one Mongols member died in the fracas during the annual Laughlin River Run, a southern Nevada motorcycle rally....