buzz saw
noun
plural buzz saws
1: a power saw with a circular cutting blade : circular saw
2: someone or something that presents overwhelming opposition
The Buckeyes have been a buzz saw …, winning by an average of 47.7 points in a 4-0 start. —Tom Dienhart
—>usually used in the phrase run/walk into a buzz saw
… the organizers ran into a buzz saw of complaints about many of its proposed venues, which had not been vetted with some of the landlords or the public. —Katharine Q. Seelye
They ran into a buzz saw Saturday night against … Kentucky, a loss that likely means a new No. 1 on Monday. —John Marshall
Never before has a president asked a Supreme Court nominee to walk into a political buzz saw quite like this. —Susan Davis