How does ballroom dancing function as a metaphor for the larger meaning of "MASTER HAROLD" . . . and the Boys?

In Master Harold ... And the Boys,
the larger meaning speaks of abandoning the set ways of society's dictates along with
abandoning the psychologically governing and entrenched ways of family behavior. Sam
tries to teach Hally (Master Harold) to do this while living under the restrictions and
prejudices of apartheid. Sam's teachings are exemplified when Sam extends his hand
toward Hally to reconcile their breach as Hally sits alone on the "Whites Only"
bench.

Ballroom dancing is a metaphor for this larger meaning because
dancing too requires partnerships in learning and invitations to rise from a spectator's
bench and accept the hand of another to join the dance. As a dance must be learned
together by both partners, so must new ways of living, which reject the banner of
apartheid, be learned together by both partners. Sam's invitation to Hally to dance
outside of the bondage of apartheid was made with an extended hand as he
said:

"You
know what that [whites only] bench means now and you can leave it any time you choose.
All you've got to do is stand up and walk away from
it."