And why shouldn't they? Police departments and city officials across the US routinely lie, obsfucate and remove any sense of accountability for police officers who commit crimes or make mistakes.
Look at the case of the murder of Laquan McDonald in Chicago. The lying and stonewalling is a common occurrence. It's not just a few bad apples, it's a bad system that promotes escalation and grants power without accountability.
It took the prosecuting attorney 15 months to charge the Chicago cop (Van Dyke) with first degree murder. And this was long after the family resigned to believe their son was at fault. It took a whistleblower to come forward to start a long figh for the truth.
After the courts forced the police to release the videotape to the family, whereas the City Council immediately votes to give the family $5 million with the agreement to keep the tape private before they even filed a lawsuit. It took someone else getting the video for it to become public and the cop to be charged.
Being annoying or insulting to governmet employees isn't a crime.