There were dozens of OWS protest all over the country for about a year. Some larger than others. Some outside the US. It’s a great oversimplification to say it was just one protest.
But they simply weren’t a big deal (And I did mean to clarify that the original OWS occupied other places, as well.)
When was the last OWS protest? You don’t know, do you? 2012? Something like that.
In the scheme of true civil movements that actually have the potential to change things, OWS was minor league stuff. LOW minors. Hell, high school sport low. You don’t get stuff done with one big weekend and some spinoff demonstrations for twelve months.
The Civil Rights movement went for decades. When Rosa Parks got herself arrested in 1955, the movement was already a well organized one; her action was planned by the NAACP and was similar to many previous acts of civil disobedience. That was a full eight years before King’s “I Have A Dream” speech and nine years before the Civil Rights Act was passed. The movement protested, and protested, and protested. I would say without fear of exagerration that the effort put into civil rights just in the 1950s and 1960s, as measured by person-hours, was least a thousand times greater than Occupy Wall Street.