to advance beyond proper, established, or usual limits; make gradual inroads

A dictatorship of the majority is encroaching on the rights of the individual.

to trespass upon the property, domain, or rights of another, esp. stealthily or by gradual advances.

verb

keep off

verb

appropriate , arrogate , barge in * , butt in * , crash , elbow in , entrench , horn in , impinge , infringe , interfere , interpose , intervene , intrude , make inroads , meddle , muscle in , overstep , put two cents in , squeeze in , stick nose into , trench , trespass , usurp , work in , worm in , intrench , invade , motivation