reduce (one) to (doing something)
To cause, force, or bring one to perform some humble, unbefitting, or undignified action or behavior. Often used in passive constructions. I can't believe I was reduced to begging for my job when they threatened to fire me. Those idiotic lawmen will never reduce me to pleading for my life.
reduced to doing something
brought into a certain humble condition or state. The poor man was reduced to begging for food.