We can infer from the passage that in the 1950s …………

The Angry Young British Men were a group of British novelists and the playwrights, active in the 1950s, whose literature was a protest against middle-class rigid class distinctions. They sympathised with the lower class, from which some of them came. Some of the keenest representatives of the group are John Osborne, Colin Wilson, John Braine, and Shelagh Delaney. The term is taken from the title of Leslie Allen Paul's autobiography, Angry Young Man, but is often associated with Osborne's popular play Look Back in Anger. Its brooding, volatile anti-hero, Jimmy Porter, best depicted the mood of the group.