Whatever happened to the weirdos? The rock'n'roll rebels? The children of The Revolution who not so much raged against The Man as barely acknowledged the concept of authority? Like vividly plumed birds of paradise whose habitat is gone, they're practically extinct. In their place? The communal voice of the on-trend musical activist, forever saying and doing The Right Thing. The opposite, in fact, of what we used to know as the free-wheelin' rock 'n'...