Before Palestinians were refugees, they lived in a peaceful area of the Ottoman empire. Muslim, Christian and Jewish Palestinians lived together more or less amicably. These people did not seek war. War came to them.
Today most Palestinians are nationless refugees. As their land continues to disappear, a few more lose their homes, farms, businesses, places of worship... Every day a few more are robbed of their possessions, tortured, killed... The lucky ones who have survived 60 years of war continue to live under constant bombardment.
Originally these war victims numbered in the hundreds of thousands. Today they number about four million.
Their high birth rate, shrinking territory, increasingly crowded conditions continues to lead to behaviors which makes them harder to ignore. Reducing aid, withholding tax revenues, destroying their infrastructure (electricity, sewer, water...) only makes them meaner and nastier.
As these people rot in filth and squalor, the international community mostly ignores them.