Bash down
Definition 1 of 2
Pro Tip 1/3Aggressive Action
It implies a violent or forceful action, usually driven by strong emotions. 
He bashed down the barrier in his way.
Pro Tip 2/3Physical Impact
The phrase often refers to a physical attack on an object. 
During the raid, they bashed down the gate.
Pro Tip 3/3Intensity
It suggests an intense effort to break or destroy something. 
The team worked to bash down the walls of the old building.