By virtue of geography, Gaza can be fairly described as the world’s largest open-air prison. It is contained completely by Israel. The inmates have no hope of attaining freedom on their own, by force or otherwise.
It is in that light that you should view the demonstrations at the border. The Israelis are undoubtedly using disproportionate force in response in order to send the message to the protesters that the rest of the world is focused on Iran and doesn’t care about them. The Palestinians, for their part, are probably playing a longer game. It is true that no one is going to help them in the short run, but the images that are being created today will be etched in the minds of the Arab world for a long time, and Israel is just an Islamist revolution in Egypt away from having a serious problem on its hands.