The same thing that's wrong with Congressmen, executive-branch bureacrats, school teachers, corporate CEOs and CFOs, university presidents and provosts, and pretty much any one else whose job description involves power or money held in trust or managed on behalf of others: they all think their position exists for their benefit, not those whom they are in theory being paid to serve (or in the case of police serve and protect, and the nearly universal police department motto puts it). We live in the Era of Bad Stewards. Virtually everyone in a position of trust is corrupt, if not outright, and directly (whether on the take or contriving to get pay packages with no relation to performance), then by virtue of wanting to expand the reach, power and influence of their offices beyond what the good they theoretically serve would warrant.
In cops it comes out a little differently, as violence, either as in this case violence perpetrated against innocents on some pretext or intimidation of people who want to fix their unsustainable pension fund, swagger, and violation of constitutional right (they in theory are supposed to defend). But it's the same mindset.
Clever
I agree with this. Although perhaps not absolutely everyone is involved, there are certainly vastly increasing levels of corruption, in forms that are not always acknowledged as such.