What does "slacktivism" mean?

Half-hearted activism, usually in the form of posting badges, images, apps, or text on social media without taking further action.

What is a synonym for "slacktivism"?

Common synonyms include: clicktivism.

noun, slang

noun, slang ·Uncommon ·College level

Noun

1
Half-hearted activism, usually in the form of posting badges, images, apps, or text on social media without taking further action. derogatory, informal, uncountable
"By “fight back,” he meant, basically, tweeting. Internet activism is sometimes derided as “slacktivism”—a fair characterization when an online campaign tries to, say, cure aids or end child labor."