Answer:
Meaning:
Anti-revolutionary activities refer to the activities used to counter act revolutionary activities. You can think of these activities as a suppression or a riot control subject which is a counter to a revolution.
Some Ideas:
Some activities would be preserving state affairs, keeping the same things happening before the revolution, and stop people who want or are doing a revolution.
Anti-revolutionary activities can result in positive or negative results depending on what the "revolution" was on and what it was about.
Real life Example:
One example is, if the government was communist and there was a revolution to it, then the revolution would of had a good purpose(not to the communists obviously). Anti revolutionary activities would be activities to maintain the communism and eliminate the people who wanted a democracy. Or diminish their importance.
I hope this helps you! :)