The group of more than 100 staffers held a vigil on the steps of the US Capitol to honor civilians killed during the fighting.
Thousands of flowers were laid down at the site to memorialize the reported 10,000 Palestinians that have died since the war started last month.
“We are congressional staffers on Capitol Hill, and we are no longer comfortable staying silent,” one of the group’s members said on Wednesday afternoon.
“We were horrified by the brutal October 7th attacks on Israeli civilians, and we are horrified by the overwhelming response by the Israeli government that has killed thousands of innocent Palestinian civilians in Gaza.
“Our constituents are pleading for a ceasefire, and we are the staffers answering their calls,” the member stated, adding that more of the group’s bosses were not listening to the people they represent.