Beginning in the 1980s , many anti-nuclear power activists began shifting their interest , by joining a rapidly growing nuclear freeze movement , and the primary concern about nuclear hazards in the US changed from the problems of nuclear power plants to the prospects of nuclear war .
Beginning in the 1980s , many anti-nuclear power activists began shifting their interest , by joining a rapidly growing nuclear freeze movement , and the primary concern about nuclear hazards in the USA changed from the problems of nuclear power plants to the prospects of nuclear war .