There's this movie about a little boy who wants to dance ballet against the backdrop of a general strike, and his father and brother are on strike, and later released for the boy's sake

2000 British movie "Dance Me Out"

Synopsis:

Billy's family is an underclass of miners in England. They go on strike and struggle to live in poverty.?

Because of a small accident, Billy discovers a subconscious love of ballet, and Wilkinson, a fussy and worldly ballet teacher, inadvertently discovers Billy's great talent for ballet...