This is unlikely to be effective, but here's an online petition worth signing, though the recent election of Hamas undermines the call for 'bilateral negotiations'.

The undersigned urge the Green Party to reverse its resolution in support of Divestment from Israel and to eliminate that resolution from its platform.

As with any conflict, the Israel-Arab conflict requires bilateral peace negotiations and joint agreements in order for a real and lasting peace to be achieved. Divestment is an aggressively coercive tool that is counterproductive due to the presumption that only one party (Israel) is to blame for the conflict.

There's an article about how the resolution came about on Frontpage magazine.