Whooping Cough (1987)

The story of 10-year-old boy and his family against the backdrop of the bloody events of 1956, in Budapest. Children do not yet understand what is going on, but they're happy because the schools are closed. But gradually, to adults and children comes the understanding that something terrible is happening. Disappearing relatives, friends, and even killed some. Tips sent an army to put down the counterrevolutionary rebellion.

Unfortunately the movie Whooping Cough is not yet available on HBO Max.