<Tr> <Th_colspan="2"> Case opinions </Th> </Tr> <Tr> <Th> Majority </Th> <Td> Powell, joined by Stewart, Marshall, Blackmun, Rehnquist </Td> </Tr> <Tr> <Th> Concurrence </Th> <Td> Blackmun </Td> </Tr> <Tr> <Th> Dissent </Th> <Td> Burger </Td> </Tr>

Under the first amendment there is no such thing as a false idea