Win too much for too long, and folks will try to knock you down.

WSJ: The Backlash Against Barcelona

Dogs express their love and trust in many ways -- some lap at your face, knock you down with kisses as you come home, leave a half-dead animal on your pillow, or sit on your lap and sigh with contentment.

CNN: Lean on me: Loving and losing a dog

You know, you smash down, you knock down the instability in one region, it's going to pop up somewhere else, and you will always face that threat.

NPR: Gulf Oil Discovery Could Have Far-Reaching Effect

Blimey, you could knock me down with a wet haddock there.

FORBES: Inequality For All: I Hope This Movie Is Better Than The Write Ups Of It

"I cannot describe what it is like to live everyday thinking that immigration officers will knock down your door and take you away, " says Bethsider.

BBC: NEWS | UK | Asylum: 'I just want my children to be safe'

What you have done is create an argument that neither of the voices you cited actually hold and then try to knock it down.

FORBES: Yes, There's A Link Between Hurricane Irene And Global Warming

You can knock one of these nuclei from up to down by bathing it in radio waves of a particular frequency (exactly which frequency depends on the element).

ECONOMIST: The cost of forgetting

You can come down, make phone calls, knock on doors.

WHITEHOUSE: The White House