OK, here's IMO a genuine example of police using unnecessary force and will likely get punished for it. Just IMO I believe he deserves a brief term in jail for assault but I doubt that will happen. Currently he's on paid leave pending investigation. The police chief is interviewed on the video too.
Tallahassee cop on paid leave after tasing woman, 62 - CNN.com
There is video. The woman was walking away. It didnt look like she had been hostile to the cop. The video I saw on the news looked a little different than this so I dont know if there is more than one.
As Mahan put one arrested suspect in the back of a patrol car, Young pulled up, forcing Mahan "to take [his] focus off of one of the arrestees and engage her," Mahan said in his report.
"Young's actions obstructed officers while in the course of completing their legal duties," he wrote.
The woman was walking calmly away when she was tazed. The officer had decided to arrest her as well, for obstructing justice while they were arresting other people. So I guess he couldnt just go after her and arrest her???? Unneccessary force. Incredibly bad for the community.