Mad that Willie Nelson is playing at a rally for U.S. Rep. Beto O'Rourke? You’re entitled to your opinion, the Austin icon and country music legend says.

Nelson will headline a concert for the El Paso Democrat, who is running to unseat Republican U.S. Sen. Ted Cruz, on Sept. 29 at Auditorium Shores. That hasn't settled well with some conservative fans, who have taken to social media to blast the "On the Road Again" singer. 

?RELATED: Leon Bridges to join Willie Nelson at Beto O’Rourke rally at Auditorium Shores

Nelson appeared on ABC roundtable talkshow "The View" on Tuesday, where he told the hosts that the ire didn't bother him.

"I don't care," Nelson told "View" co-host Joy Behar. "(Fans who don't like it) are entitled to their opinion, and I am entitled to mine."