The correct answer is that what led the Soviet Union to establish the Warsaw Pact was that West Germany joined NATO in 1955.
The Treaty of Friendship, Cooperation and Mutual Assistance, better known as the Warsaw Pact, was a military cooperation agreement signed on May 14, 1955 by the countries of the Eastern Bloc. Designed under the leadership of the Union of Soviet Socialist Republics (USSR), its express purpose was to counteract the threat of the North Atlantic Treaty Organization (NATO), and in particular the rearmament of the German Federal Republic, to which the Paris Agreements allowed to reorganize their armed forces and join the NATO. The Pact was dissolved on July 1, 1991.
Answer: Very few groups in the 1960s advocated violence, except the US government, in the form of military adventure, where they went far beyond advocating. A total of about 1,353,000 deaths occurred on all sides in the Vietnam war. Then there was/is the Klu Klux Klan. We need to be watchful even now. The Weathermen were a small organization and they claimed not to intend violence, but use it if “necessary.” The Black Panthers called themselves a party of “self defense.” Whether or how often individuals in the latter two groups deviated from their charters (if any) is hard to determine.
Anyway people can justify their actions of violence it doesn't mean it was justification for everybody.
