On Saturday, thousands were expected to arrive on Capitol Hill to protest the practice of hydraulic fracturing, or perhaps more commonly known as, fracking.

The rally took place on the lawn in front of the U.S. Capitol building, as many gathered together in Washington D.C. on a sweltering day to share their views the hot topic of hydraulic fracturing. Prior to the 2 p.m. start of the "Stop the Frack Attack" rally, people could be observed carrying signs and wearing t-shirts. They arrived by foot, bus and via the nearby Union Station. All there for one common purpose, to protest the controversial oil and gas extraction procedure known as "fracking". Fracking is a process that relies on the use of high-pressure injections of water, sand and chemicals, which are used to break through rock to release the oil and gas inside.