At first glance, the rainbow flag’s joyous refraction of colour may seem a strangely sunny response to the dark savagery of the deadliest mass shooting in US history. Suddenly, they are everywhere: stretched across balconies, flapping from car antennas, and pinned to coat lapels the world over in a moving display of solidarity with the community that was brutally terrorised on Sunday after a bigoted assault at a gay nightclub in Orlando, Florida.
