Carrying pro-Palestinian banners and portraits of Hezbollah chief Hassan Nasrallah, hundreds of Kashmiri Muslims marched through the streets of the summer capital Srinagar chanting, "death to Israel" and "death to US".
"Look how they are killing Muslims and no one seems to be bothered," said Akbar Ali, one of the protesters.
Kashmir is in the grip of a nearly two-decade old insurgency against Indian rule that has so far left more than 47,000 people dead by official count.
At least 420 Palestinians have died in a seven day blitz by Israel, while rockets fired from Gaza have claimed four Israeli lives.
Israel on Wednesday rejected a French proposal for a 48-hour ceasefire to help humanitarian efforts, and tanks and troops are now massed for a threatened ground offensive.
Hamas has called for a "day of wrath" on Friday in East Jerusalem and the West Bank, with "massive marches" after weekly Muslim prayers.