Jersey City cultural parades and festivals are being asked to pay the price in Jersey City’s battle to curb its police overtime budget. Long celebrated as a selling point of one of the most diverse cities in the nation, these events — mostly hosted by non-profit organizations — will cost more to operate under an ordinance that raises the prices for security. The ordinance, which would amend an ordinance setting prices for different off-duty and overtime police details, is up for introduction at Wednesday’s city council meeting. Since parades are not, in general, revenue producers, the city his…