On June 18, 1964, J.T. Johnson (L) and Al Lingo (R) were two of several protesters who jumped into the whites only pool at the Monson Motor Lodge in St. Augustine, Florida.

At StoryCorps, they talk about how the owner of the hotel tried to force them out by pouring acid into the pool.

In June 1964, James Brock dumped acid into the water at the Monson Motor Lodge in St. Augustine, Fla. He was trying to disrupt swimmers who were protesting the hotel's whites-only policy.

Originally aired June 13, 2014, on NPR’s Morning Edition.

Photo credit: Protesters demonstrating in the swimming pool of the Monson Motor Lodge scream as motel manager James Brock dumps muriatic acid into the water. Image by © Bettmann/CORBIS