The Trump administration has deployed the California National Guard in response to protests in Los Angeles that began Friday evening over immigration enforcement operations, which resulted in some clashes between demonstrators and authorities,

The ban has been strongly condemned as discriminatory by groups that provide aid and resettlement to refugees, who say it will prevent many people from reuniting with family and jeopardize the safety of those fleeing conflict and persecution in countries such as Afghanistan.

President Donald Trump’s new ban on travel to the U.S. by citizens from 12 mainly African and Middle Eastern countries took effect Monday amid rising tension over the president’s escalating campaign of immigration enforcement.