The soldiers in the outposts are continually on the look-out, ready to push back enemy attacks.

Around the world, we’re more tolerant -- with more opportunity for women, and gays and lesbians, as we push back on bigotry and prejudice.

Environmental groups vowed to push back against the president's actions.

To make things more complicated, recent discoveries are threatening to push back the arrival of humans in North America even further back in time.

“We must push back against the pushback,” he said. “We cannot give way; we refuse to lose the ground we have won.”