Ken Casey, frontman of the Dropkick Murphys, is busy both on and off the stage this fall: the band released their 11th album on Friday, and he is opening a third Yellow Door Taqueria location next month in Mission Hill.

Casey joined Jim Braude on Greater Boston to discuss his projects, share some of his latest culinary ventures, and explain why he won’t back down from confronting white nationalists.

The name of Dropkick Murphys’ latest album, “This Machine Still Kills Fascists,” comes from a phrase singer, songwriter and activist Woody Guthrie once had painted on his guitar. The album is a collaboration with the legendary songwriter, with the band setting Guthrie's words to music.

“This album was all acoustic because we wanted to give it some nod to how Woody would have done it,” Casey said.

Casey, who has been known to disavow white nationalism and former President Donald Trump on stage at his concerts, said he is not concerned about whether standing up for his beliefs costs him fans.

“The way I look at things nowadays, it's like to not speak up is to be complicit," he said, "because we could lose our democracy if we just assume that good is going to win out over evil. And I do think it's evil.”

Watch: Ken Casey talks Dropkick Murphys' latest album and his venture in tacos