“Why can’t we be friends?”

Those hopeful lyrics sure made plenty of sense to — and a lot of money for — War, the 1970s-era funk group. But when some of the band members played a reunion tour of sorts in Los Angeles federal court this spring, the group’s old anthem had turned into anything but a make-love-not-war ode. Instead, it was more like “It’s My Band and I’ll Play If I Want to.”