I tried to point out that the summer months bring people to the boil. google - 'racism by month' and every year there is a spike going up to june july, then slowly receding. The USA showed what real racism looked like. It took all our petty bickering and hammered it into the ground.
Marching season brings out all the bottle red faced angry people. in Ireland it's the orange men. In London it's the gay liberation, Football crowds too. Any large crowds bring out the chavs and neds.