Original: Climax and split: 1968–1969 In the spring of 1968, National SDS activists led an effort on the campuses called "Ten Days of Resistance" and local chapters cooperated with the Student Mobilization Committee in rallies, marches, sit-ins and teach-ins, which culminated in a one-day strike on April 26.
Simplified: In the spring of 1968, National SDS activists led an effort on the campuses called "Ten Days of Resistance" and local chapters held rallies, marches, sit-ins and teach-ins, ending in a one-day strike on April 26.