LOS ANGELES, June 13 (Reuters) - U.S. Marines deployed to Los Angeles made their first detention of a civilian on Friday, part of a rare use of military force to support domestic police and coming ahead of national protests over President Donald Trump's military parade in Washington.

The detention of the man, a U.S. Army veteran and an immigrant who obtained U.S. citizenship, punctuated a series of highly unusual events that have appealed to Trump supporters but outraged other Americans who are demonstrating discontent in the streets.