The petty vandalism done to Rabbi Lerner's home can only be the act of fools, who do not understand that they are damaging the cause of Zionism and of Israel.
Only fools resort to violence to settle an otherwise peaceful political difference of opinion. Everyone else understands that as soon as you have used violence, you lost the argument, no matter how just your claims might be.
The perpetrators do not not represent anyone other than themselves. Rabbi Lerner's opinions and actions are despicable, but committing this act of petty vandalism against him will only give his cause an aura of undeserved glory and martyrdom.