Weekend events at Kent State bring to mind Marx's aphorism about events in history happening, twice, the first time as tragedy, the second time as farce.

An end-of-year college block party spiraled out of control as police fired pellets and used pepper spray to break up hundreds of rioting students who sparked a string of street fires at Kent State University.

Video posted on the Internet shows students hurling furniture and street signs into the flames on Saturday night as a SWAT team in riot gear converged on the crowd. Kent police said the party grew violent after one reveler was arrested and students began pelting officers with bottles, bricks and rocks.

It was the first violent clash between Kent State students and police in years. In 1970, four Kent State students were killed by Ohio National Guard troops during a campus protest of the invasion of Cambodia.