The driver of a bicycle cab was Tasered twice by police, the latest run-in in an escalating battle between the drivers of rickshaw-style pedicabs and the U.S. Park Service. The driver was trying to pick up a rider near the National Air and Space Museum, witnesses said, when he was stopped by the officer in front of hundreds of tourists.

“I hope this didn’t shatter any illusions of freedom,” said Tyler Clark, a pedicab driver and George Washington University Law School student who witnessed the incident.