We were horrified to learn that Lincolnshire police have been using CS gas against travellers, including women and children, in order to stop them moving on to a site at Twyford Wood ("Traveller convoy on move again", 16 November). As far as we understand it, CS gas is meant to be used when tackling dangerous, armed criminals, not against potential trespassers. Your readers will be aware that there have been two deaths attributable to the use of CS gas in England. We wonder what the police will use next against travellers and gypsies.

Donald Kenrick

Romany Guild, London W11