A Democratic Senator called out the GOP's "aversion to gun control" on Sunday following the deadly shooting at Brown University.

On Saturday, a gunman killed two students and critically wounded nine others at Brown University. Police have arrested an individual they've identified as a person of interest.

A vigil is scheduled on Sunday night for the slain students.

Sen. Jack Reed (D-RI) discussed the shooting during an interview on MS NOW's weekend show, "White House: Weekend."

"We're going to have to roll up our sleeves and get back in the fight, literally," Reed said about Democrats working with Republicans on gun control measures. "Are there sympathetic elements? I think there are. But they have to overcome a general aversion in their party to any type of gun control."

Reed laid part of the blame for the lack of support for gun control policies at the feet of the gun lobby, which he described as "well-financed and entrenched."

"There are cultural issues here," he added. "We all remember the western movies where everybody had a gun. And there are many parts of the United States, including even parts of New England, where, having a weapon is something that they feel is a right that they must have, and they vigorously defend it."

"So we're trying to convince people that for their good, for their safety, the safety of their children, without restricting access to firearms, for hunting and for target shooting and everything that is like sport ... but we are going to make sure people are safer," Reed added. "It's a long struggle."