He was not a police officer, it's just some unauthorized nypd shirts hes wearing that anyone can buy from the I Love NY tourist stores in nyc.so when pakistanis came to the uk in 60's did things go sour? not really no only a little which was swiftly dealt with. it is very hard for a country to monitor each and everyperson coming to theri country. in this case the guy who killed these people was on the "radar" but why no action? he was a police officer so why was he not screened then?