A massive crowd of protesters blocked traffic on a downtown Los Angeles freeway, causing major delays, in response to President Donald Trump's illegal immigration crackdown.

Since his inauguration on Jan. 20, Trump has followed through on his campaign promise to dramatically boost deportation of illegal immigrants, with ICE carrying out raids in major cities including Los Angeles and San Diego.

Draped in Mexican and Salvadoran flags, roughly 1,000 demonstrators gathered near City Hall shortly before noon, blocking traffic at Spring and Temple streets.