In the early hours of July 20, a gunman entered a packed movie theater in Aurora, Colo., and opened fire on the audience that had gathered to watch the premiere of the new Batman movie, The Dark Knight Rises. The gunman killed 12 people and injured 58 others. Though police are looking for potential accomplices, the attack appears to have been conducted by James Holmes, a lone gunman who, according to some police reports, may have had a delusional fixation on the Joker, a violent villain from an earlier Batman movie.
On July 18, just two days before the Colorado attack, a man reportedly disguised in a wig and posing as an American tourist in the Black Sea resort town of Burgas, Bulgaria, detonated an improvised explosive device hidden in his backpack as a group of Israeli tourists boarded a bus bound for their hotel. The blast killed five Israelis and the Bulgarian bus driver and wounded dozens more. It is unclear if the incident was an intentional suicide attack; the device could have detonated prematurely as the man placed it on the bus. In any case, the tourists clearly were the intended targets.
The Burgas attacker has not yet been identified. Based on his profile, there is some speculation that he could have been a grassroots jihadist. However, it is also possible that he was acting on behalf of Iran and that this attack was merely the latest installment in the ongoing covert war between Iran and Israel.
While these two attacks occurred on different continents and were committed by people with different motivations and objectives, they nonetheless have one thing in common: They were directed against what are referred to in security parlance as "soft" targets, or targets that do not have much security. Soft targets are much easier to attack than hard targets, which deter attacks by maintaining a comparatively strong security presence.