 Complete the following phrase:  During the mass migration of British African-Caribbean people, known as the Windrush Generation, the CPGB dedicated much of its political activity to opposing British racial segregation, inspiring many leading black rights activists to join the CPGB, including Trevor Carter, Charlie Hutchison, Dorothy Kuya, Billy Strachan, Peter Blackman, Henry Gunter, and Len Johnson. The most famous of these black CPGB activists, Claudia Jones, created Britains first major black newspaper and founded Londons Notting Hill Carnival, the worlds second-largest annual carnival. In 1956 the party experienced a large loss of membership due to its support of Soviet military intervention in 