HUBERT HUMPHREY began swinging hardat last, said his friends.
When antiwar hecklers interrupted him outside Cleveland, the Vice President dismissed them as "damn fools." He introduced Emmett Kelly, the clown, as "Nixon's campaign manager and economic adviser." Pointing to a nearby statue of William McKinley, he sniped: "That represents as much forward movement as the opposition's ever had." When Humphrey loosed a fusillade at Nixon during an A.F.L.-C.I.O. convention in Minneapolis, a happy worker bellowed: "Give 'em hell, Hubie!" Answered the Vice President: "What do you think I'm doing?"
Humphrey's tone is calculated to...