Hundreds of protesters gathered outside the Israeli prime minister's home on Saturday night to denounce the government as war criminals and demand an end to the Gaza invasion.

Demonstrators stood outside Ehud Olmert's official residence in Jerusalem holding banners that read, "Stop, war crimes ahead," and "Swap hostages now!"
http://english.aljazeera.net/NR/exeres/2E189C05-2DD8-492A-BC7B-1E5A73F26064.htm
The thing that can be solve through dialogue that should not be dealt by Military might.
Everywhere there are conscious people.
Common people do not want war.
Politics has become profession of politicians now a days.

Hundreds is what % of the total Israeli population ?

No matter of % . It is a good sign.
Let them come up in a biger numbers.
Long live antiwar people.
Go to the hell warmongers and its puppets.

It means nothing.

It means a tiny, insignificant number of people have a different opinion.

Why did Hamas militants precipitate this crisis by kidnapping this soldier ?

Why haven't you condemned this, the root cause of the current situation ?