MODESTO (CBS/AP) — A Central Valley city has denied a request to hold a so-called Straight Pride rally at a park.

Modesto city officials on Friday denied an application by the National Straight Pride Coalition for an Aug. 24 event at Graceada Park.

READ MORE: Antioch Teen Fatally Wounded In Saturday Night Shooting; Angry Crowd Confronts Police

Organizer Don Grundmann had estimated 500 people would attend. The group says it supports heterosexuality, Christianity and white contributions to Western civilization.

Opponents argued the rally would promote hatred of LGBT people and minorities.

READ MORE: 'The Father Is A Hero'; Oakland Man, 1-Year-Old Daughter Die In Horrific Arson Fire

City spokesman Thomas Reeves says the permit request was denied over safety concerns, because the group lost its liability insurance and the parks department determined the event wasn’t consistent with park use.

However, Reeves says the city would allow the rally at a downtown plaza if the group proves it has insurance by Tuesday.

MORE NEWS: Video: Solano County Sheriff's K9 Subdues Suspect Fleeing On Foot After High-Speed Pursuit

© Copyright 2019 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report