reporter: and in the other war that altered waters' life, with his former band mates, especially david gilmoree truce. there's kind of a peace with you guys these days? >> sort of. yeah. david and i, we don't see each other, kind of ever. >> reporter: which is not slamming each other. >> yeah, which is a very good thing. >> reporter: why did that happen? >> well, it's kind of a waste of time. you know, it's a real waste of time and energy to butt-heads about things that >> reporter: this past friday, waters released his first solo album in 25 years. is this the life we really want? a question he asks again in his new tour. >> the whole show is really a kind of musical protest against the acceptance of the state of perpetual warfare. >> reporter: when you take an overtly political show like this into the polarized environment. >> mm-hm. >> reporter: of this country, what sort of reaction are you expecting? >> i'll let you know in a few weeks' time. >> reporter: at a time when the american president wants to build a wall, roger waters is still trying to tear them down. is there still a role for