JAPAN RIOTS - IKE'S VISIT CANCELLED AFTER MANILA TRIUMPH: In Tokyo; Communist-led student mobs defy warning of police crack-down after the attack on Presidential Press Secretary Hagerty; and launch a well-organized assault on the Parliament compound. The most violent rioting in a month of demonstrations continues far into the night; with more than 600 policemen and hundreds of students injured; and at least one student killed. Police can't hold back the mob until tear gas is brought into play. The result; a request by the Government that Ike's visit be cancelled in the face of Red threats. A major propaganda success for Communism; and a grave threat to the future political stability of Japan.