彼らはドアをぶち破った。

they (usually male); them

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

door (Western-style)

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to hit (a person); to strike; to beat

to tear; to break; to destroy; to break through (opponent's defense etc.); to breach; to defeat; to beat; to shatter (dream, peace, etc.); to disturb; to violate (a rule etc.); to break (a promise etc.); to break (a record)