Both he and Peter Waddington, a former policeman and now an authority on crowd control at Wolverhampton University, are sceptical about plastic bullets (or baton rounds as the police call them).

从前担任警员，现为伍尔弗汉普顿大学人群秩序控制方面专家的彼得•沃丁顿（Peter Waddington）和马丁均对塑料子弹（警察称其为防暴子弹）持怀疑态度。