Why the UK is going downhill

They are still indiscriminately accepting Islamic refugees.
That Palestinian guy is not an isolated case.

Illegal refugees arriving by boat... After receiving a 400-million won house, committed sexual crimes within two days 'Shocking' [World Pick]
Seoul Shinmun
An asylum seeker who entered the UK on a rubber boat committed an indecent act in front of young sisters sleeping in a house in Cardiff just two days after moving into government-subsidized housing. He admitted to charges of theft and sexual crimes, and British politicians have strongly criticized the use of tax subsidies and the failure of public safety.