This is not a Palestinian issue. If it were, Israel would be bombing the West Bank as well.
Gazans voluntarily elected Hamas.[1] Hamas then refused to leave after getting involved in violent conflict with their political opponents, Fatah. Were Gazans ignorant of the ideology of the creature called Hamas when they handed them power?
People should stop equating jihadis with civilians. Keep doing this and the suspicion about Muslim civilians having jihadi tendencies gains wider acceptance.
This is Hamas vs Israel, not Palestine vs Israel.
[1] https://en.wikipedia.org/wiki/Governance_of_the_Gaza_Strip