In this video Sen. John McCainJohn McCainDemocrats step up calls that Russian hack was act of war McCain: Trump admin must fill State Dept. jobs McCain says he hasn't met with Trump since inauguration MORE (R-Ariz.) responds to protesters at the National Rifle Association's (NRA) Celebration of American Values Conference in Washington, D.C. Friday. Protesters, before being removed by security guards, shout for McCain to "end the occupation" in Iraq as McCain shuffles to the podium.

"Well, my friends," McCain responds, "We beat you yesterday, we beat you the day before, we'll beat you today, and we'll beat you tomorrow. We won't choose to lose."