Because they wave English flags, and object to tens of thousands of illegal migrants coming across the channel by the boat load being given free accommodation in hotels as well as free iPhones, iPads and PlayStation consoles. These illigal migrants also get free dental care, free medical care, free prescriptions, eye-tests & glasses or contact lenses, free travel to medical treatment and free sports tickets.
Additionally, they get a £50 weekly allowance and free, taxpayer funded legal aid so that they can fight deportation.
Nice work if you can get it.