invade

To move into.

Under some circumstances police are allowed to invade a person's privacy.

Which becomes a body, and doth then invade / The state of life, out of the griesly shade.

To enter by force, usually in order to conquer.

Argentinian troops invaded the Falkland Islands in 1982.

After shaking off a pre-dawn counterattack on Tinian Monday, the American forces that invaded that island Sunday broadened and deepened their hold. Heavy casualties were inflicted on the Japanese in breaking up the attack and five enemy tanks destroyed.

To infest or overrun.

The picnic was invaded by ants.

To attack; to infringe; to encroach on; to violate.

The king invaded the rights of the people.

There are only two ways to remedy the mute-swan situation: Pay people to locate nests and addle their eggs (addling means shaking each egg hard to kill the embryo inside; if you smash the eggs, the birds will lay replacements, but swans will sit on addled eggs and not lay more), or authorized licensed hunters to shoot the birds. Addling is not only time consuming and expensive, but it's also dangerous because swans regard people who invade their nesting territory as just a larger kind of raccoon.

To make an unwelcome or uninvited visit or appearance, usually with an intent to cause trouble or some other unpleasant situation.