Just today, a former student dressed in black walked onto the stage of a lecture hall at Northern Illinois University opened fire on a packed science class, killing five students, wounding 16 and setting off a panicked stampede before committing suicide.
Police say they have no motive for the rapid-fire assault, carried out by the gunman who fired indiscriminately into the crowd with a shotgun and two handguns as students dove to the floor and ran toward the exit. At least two of the wounded were hospitalized in critical condition.
The shooting was the fourth at a U.S. school within a week.
On Feb. 8, a woman shot two fellow students to death before committing suicide at Louisiana Technical College in Baton Rouge. In Memphis, Tenn., a 17-year-old is accused of shooting and critically wounding a fellow student Monday during a high school gym class, and the 15-year-old victim of a shooting at an Oxnard, Calif., junior high school has been declared brain dead.
The United States police department should take a closer look at the serious problems behind killings like this.