Between 1978 and 1985, the sociologist, atheist, and reggae poet Linton Kwesi Johnson released four albums that demanded the transformation of postindustrial Britain: the end of "sus" laws, the improvement of immigrant rights, and, most importantly, the freedom to party. What British racism blocked was black joy and black happiness. LKJ, a very serious soul—he only wrote one love song during his peak period—recognized the importance of coupling radical politics with popular music and getting down to a good groove. (Triple Door, 216 Union St, 838-4333. 7:30 pm, $20 adv/$25 DOS, all ages.)