The yippies were

a pro-war protest movement
one of the anti-war protest groups
a hip group of white-collar workers
a college campus fraternity

The Yippies were one of the anti-war protest groups.

The Youth International Party, whose supporters were known as "yippies", was an anti-authoritarian, pro-expression and antimilitarist political party established in the United States of America in 1967. Faced with the passive attitude and self-exclusion adopted by the "hippies", retiring to rural areas to adopt their communal model of life, the "yippies" were eminently urban. The Youth International Party, as a youth party, was aware that young people were the first major US electoral majority, and that there existed a great opportunity for social change for the ultraconservative American society of that time.

mount st. helens in washington erupts, causing a massive avalanche and killing 57 people on this day in 1980. ash from the volcanic eruption fell as far away as minnesota. seismic activity at mount st. helens, which is 96 miles south of seattle, began on march 16.

i think it’s a i hope that right : )