San Diego, July 3 (RHC)-- U.S. immigrant rights activists have staged a rally in southern California to show support for undocumented immigrants confronted by right-wing demonstrators.

The migrants were traveling in three buses after being flown in from an overcrowded detention center in Texas. But they were prevented from reaching a federal immigration facility in the town of Murrieta after the right-wing demonstrators blocked the road and chanted anti-immigrant slogans.

The buses were carrying dozens of children, part of the wave of unaccompanied youths fleeing violence and poverty in Central America. The anti-immigrant activists were encouraged by local officials, including Murrieta Mayor Alan Long, who called the migrants a public safety threat.