Original sentence: "   In response to growing concerns over thousands  of bicyclists who took to the streets on the last Friday evening of each month for the rides, Brown gave his blessing to San Francisco Police Department Chief Fred Lau's plan to conduct a crackdown
Edited sentence: "   In response to growing concerns over thousands  of bicyclists who took to the streets and blocked rush-hour traffic on the last Friday evening of each month for the rides, Brown gave his blessing to San Francisco Police Department Chief Fred Lau's plan to conduct a crackdown