The phrase "in clear violation" is correct and usable in written English.
It can be used to describe an action or circumstance that is an obvious violation of a rule, law, or code of conduct. For example: The mayor was accused of accepting bribes from developers, which was in clear violation of the city's ethics laws.
The syndicated columnist Michelle Malkin argues persuasively that the I.N.S.'s decision to release John Lee Malvo after his December 2001 arrest by immigration authorities was "in clear violation of federal law".
In a statement issued Saturday evening, the United Nations Office of the High Commissioner for Human Rights described the Pokhara killing to be "in clear violation of international standards for law enforcement".
"It is in clear violation of the Child Act," she said.
I was on my cellphone, in clear violation of Taxi and Limousine Commission rules.
He recently proposed using torture against terrorists, and punishing their families, both in clear violation of international law.
Some complained that NGOs connecting poor families to the electricity grid were in clear violation of the law.
According to his brother Vladimir, the deplorable conditions of Ilich's imprisonment are also in clear violation of his human rights.
The government is able to push through draconian laws that are in clear violation of the Constitution.
The conditions of Mr. Khadr's imprisonment have been in clear violation of the Geneva Conventions and international accords on the treatment of children.
On weekdays, a school bus drives past early in the morning, honking as it approaches its stop, in clear violation of the "don't honk" sign.
In Thursday's interview, Mr. Schmidt said that the software code responsible for the data collection was in "clear violation" of Google's rules.
