Okay so your problem is with certain kinds of activism not activism in general.
Also you have a very simplistic view of activism throughout history. Rosa Parks and MLK are two among hundreds of activist leaders and millions of activists who participated. To give them even 50% of the credit would be wildly exaggerating, the real bulk work was done by people you've never heard of and those people were activists engaging in activism and it wasn't pointless.
A quote from one of the leaders of the Woman's Suffrage movement:
"To get the word male in effect out of the Constitution cost the women of the country fifty-two years of pauseless campaign...During that time they were forced to conduct fifty-six campaigns of referenda to male voters; 480 campaigns to get Legislatures to submit suffrage amendments to voters; 47 campaigns to get State constitutional conventions to write woman suffrage into State constitutions; 277 campaigns to get State party conventions to include woman suffrage planks; 30 campaigns to get presidential party conventions to adopt woman suffrage planks in party platforms, and 19 campaigns with 19 successive Congresses. Millions of dollars were raised, mainly in small sums, and expended with economic care. Hundreds of women gave the accumulated possibilities of an entire lifetime, thousands gave years of their lives, hundreds of thousands gave constant interest and such aid as they could."
Those campaigns are activism. That activism convinced Woodrow Wilson and others to push for the 19th amendment.
But you, "see no value in activism of any kind."
Which is mind boggling and I think disingenuous without some kind of mental gymnastics to qualify that statement.