ALEXANDRIA, La. -- A Louisiana teenager who used nooses to intimidate black civil rights demonstrators was sentenced Friday to four months in federal prison.

Jeremiah Munsen, 19, of Colfax, had nooses hanging from the back of his pickup truck when he drove past people who had attended a massive civil rights march in Jena last September, according to federal prosecutors.

Munsen had faced up to a year in prison after he pleaded guilty in April to a misdemeanor charge of interfering with the marchers' federally protected right to travel.

U.S. District Judge Dee Drell in Alexandria also sentenced Munsen to 125 hours of community service and one year of supervised release following his prison term, according to Assistant U.S. Attorney William Flanagan.

Munsen was sentenced on the same day that an anti-noose law took effect in Louisiana. The new law makes it a state crime, punishable by up to one year in prison, to try to intimidate someone with a hangman's noose, a Deep South symbol of racial hatred.

The marchers were waiting in Alexandria for a bus home to Tennessee after protesting the criminal cases against six black teenagers charged with beating a white student at Jena High School in 2006.

A 16-year-old passenger in Munsen's truck also was arrested, but Flanagan said he couldn't comment on juvenile proceedings.

In a court filing last month, prosecutors said Munsen cooperated with investigators and asked Drell to impose a sentence that reflected his "substantial assistance."

The Rev. Al Sharpton, who helped organize the march in Jena, said in a statement earlier this year that he applauded federal prosecutors for charging Munsen with a hate crime.

Munsen's attorney, Billy Guin Jr., did not immediately return a call for comment.

(Copyright 2008 by The Associated Press. All Rights Reserved.)