There were at least four major protests this weekend targeting fracking, nuclear power, pollution, and mountaintop-removal mining. Here’s a quiz: How many of these protests did you know about?

There was Saturday’s banjo-festooned fracking protest in Washington, D.C. It was called “Stop the Frack Attack,” and it called on politicians to stop the frack attack. Some estimates suggest that 5,000 people participated in the action; UPI asked a pro-fracking guy how many were there and he said that he heard 1,500 from a cop, so UPI went with 1,500.

Anti-fracking protestors march in Washington, D.C. (Photo by TXsharon.)

There were also protests in Japan and China. Earlier this month, some 100,000 people rallied in Tokyo to try and prevent a nuclear generator from being turned back on. Over the weekend, tens of thousands more marched outside of Parliament with the same aim: calling on the prime minister to halt the use of nuclear power. (There were no reports of banjos.)

Police, in blue, clash with protestors in Qidong. (Photo via TeaLeafNation.)

In Qidong, China, a huge protest halted plans to run a wastewater pipeline from a paper plant into the ocean.

The pipeline that residents fear will pollute their water will not be built, the government promised on the Qidong police micro-blog and the website of Nantong city, which oversees Qidong.

This apparent victory for residents follows another one this month when protesters in the southwest city of Shifang, in Sichuan province, forced officials to scrap a planned copper refinery. A large demonstration halted a petrochemicals plant in Dalian, in eastern China, last year.