The US-backed Kurdish administration in northern Syria has deliberately displaced thousands of mainly Arab citizens and demolished homes, according to Amnesty International.
The report said the abuses, which amount to war crimes, were often carried out in retaliation for residents' perceived sympathies for or ties to the so-called 'Islamic State' group or other militants.
The Kurds, Syria's largest ethnic minority, have carved out a semi-autonomous enclave in the north since the start of the country's civil war in 2011.
Kurdish fighters have proven to be among the most successful ground forces battling 'IS'.
Backed by US-led air strikes, they defeated 'IS' in the Syrian border town of Kobani earlier this year and have since expanded their territory along the border with Turkey.