Collocations for violation - noun

blatant, clear, flagrant, obvious
The attack on civilians is a flagrant violation of the peace agreement.

egregious (formal, esp. AmE), grave, gross, major, massive, serious
minor
direct
practices that are in direct violation of the Geneva Conventions

technical (esp. AmE)
a technical violation of law

systematic, wholesale (esp. AmE), widespread
continued, repeated
alleged
civil liberties (esp. AmE), civil rights (esp. AmE), human rights
privacy
ethical (esp. AmE)
code, law, rule (all esp. AmE)
He had been fined for building code violations.
arrests for drug law violations

criminal (esp. AmE)
drug (AmE)
Nearly 60% of all arrests are for drug violations.

traffic
copyright, trademark
parole, probation (both esp. AmE)
immigration, visa (both esp. AmE)
safety, security (both esp. AmE)
fines for safety violations

antitrust (AmE)

commit
The army was accused of committing violations against the accord.

be, constitute
This action constitutes a violation of international law.

report
detect, find
investigate
ignore
avoid, prevent

in violation of
There is plenty of evidence that her actions were in violation of an earlier contract.

violation against
violations against minimum wage agreements