The unwanted visitors, dressed in black and carrying cowbells, walked up the congressman’s private driveway in what appeared ...

Protesters deliver a cardboard coffin prop with epitaph to the private home of House Administration Committee Chairman Bryan ...

A black curtain? Very dim lighting?), so you can prop the whole thing up from below, including the wheels and doors, and add some chairs for the actors. And hope it doesn't all collapse during Act II.