SIR – There appears to be a worrying pattern in the way demonstrations and civic disturbances are being policed, especially by the Met. In the first instance there seems to be a hands-off policy: remember the early environmental protests, where officers handed out water and stood chatting with demonstrators as roads were brought to a standstill. Only after public outrage and political pressure did police tactics change. This hands-off strategy is now being applied to Free Palestine and anti-Isra