Protesters rally in Harvard Square against Trump travel ban

Several hundred people march down the middle of Massachusetts Avenue through Harvard Square in protest to a travel ban in Cambridge, Mass., Tuesday, March 7, 2017. President Donald Trump signed a revised travel ban on Monday that temporarily halts entry to the U.S. for people from six Muslim-majority nations who are seeking new visas for at least 90 days and suspends the country's refugee resettlement process for 120 days. (AP Photo/Charles Krupa) (The Associated Press)

Protesters gather to hear speakers from the Harvard Islamic Society during a protest in Harvard Square in Cambridge, Mass., Tuesday, March 7, 2017. President Trump signed a revised travel ban on Monday that temporarily halts entry to the U.S. for people from six Muslim-majority nations who are seeking new visas and suspends the country's refugee program. (AP Photo/Charles Krupa) (The Associated Press)

Several hundred people march past the gates of Harvard Yard at Harvard University while protesting the travel ban in Cambridge, Mass., Tuesday, March 7, 2017. President Donald Trump signed a revised travel ban on Monday that temporarily halts entry to the U.S. for people from six Muslim-majority nations who are seeking new visas for at least 90 days and suspends the country's refugee program for 120 days. (AP Photo/Charles Krupa) (The Associated Press)

Hundreds of protesters have gathered in a plaza at Harvard University to voice opposition to Republican President Donald Trump's revised travel ban targeting visitors from majority Muslim countries.

The Harvard Islamic Society, the Society of Arab Students and other student groups organized the Tuesday night rally at Harvard Square after Trump issued the new executive order Monday. Roughly 300 people turned out holding signs opposed to the order and the Trump administration.

Police set up a perimeter around the growing crowd. But the event appeared peaceful at its outset. Organizers say they plan to march through the square to a nearby park.

The new measure prevents citizens of Syria, Iran, Libya, Somalia, Sudan and Yemen from obtaining U.S. visas for at least 90 days. It also suspends the refugee resettlement process for 120 days.