How did the crusades leave a legacy of hatred?

Thy fought the a lot of Muslims and angered Christians on their holy soils. The Muslim wars were brutal and with swift action, nearly causing an uproar with the Islamic people. The battles with Christians were long and constant, they put up a good fight and didn't back down. They both defended their lands with strength and integrity. Although the crusaders may have won both fights, in the end it gave them a lot of hatred for their greed in power.