I blame The Man.

Via LA Times:

Sunday started with fiery sermons at Brown Chapel Church, where the 1965 marchers based themselves. Several speakers, including U.S. Atty. Gen. Eric H. Holder Jr. and the Rev. Al Sharpton, called for restoration of the Voting Rights Act, which was weakened by a 2013 Supreme Court ruling, Shelby County vs. Holder.

In a 5-4 decision, the high court struck down a key part of the act that required Southern states to seek federal approval before changing their election laws or redrawing districts. […]

In a speech, Sharpton said, “We know why they went across that bridge, and there’s still some bridges we have to cross.”

Literally, however, Sharpton and his fellow dignitaries didn’t make it on time for Sunday’s planned midday bridge crossing. With the Secret Service and other security infrastructure that had accompanied Obama on Saturday gone, Sunday’s crowds overwhelmed authorities. By midday, the bridge was packed with people.