By Fred Burton and Dan Burges When the dust settled following a bus explosion in Togliatti, Russia, on Oct. 31, few explanations emerged as to who was responsible for the attack, which killed eight people and injured at least 50. Although terrorism is a possibility, two leading theories place the blame on Russian organized crime. One such theory suggests that a person or people riding the bus was the target of the Russian mob, and the other causalities were simply collateral damage. Though this act might seem excessive, Russian organized crime has a history of ensuring it eliminates its targets through excessive use of explosives. A second theory is that Russian organized crime targeted the bus itself as retribution against the bus company, perhaps because the company refused to pay protection money to the mob.