The Sunland-Tujunga Fourth of July Parade, the longest-running Independence Day parade in the San Fernando Valley, has been canceled after organizers say the city withdrew support and left them facing at least $20,000 in traffic control and street closure costs. “The mayor’s office jerked us around for so long,” said Lydia Grant, president of the Sunland-Tujunga Neighborhood Council. “It’s devastating. We’ve been doing this parade for over 50 years.” Organizers announced Monday that it was ”with great sadness” that they’ve be unable to host the parade. The event, hosted annually by the Sunland-Tujunga-Shadow Hills Rotary Club and the Neighborhood Council,...