What I would have done was ask if I was being arrested or detained. If the officer said no, I would have said that there was nothing they could then do to infringe upon my rights. Whether someone was disturbing the class or not, I am certain this inevitably caused a bigger disturbance then she ever caused. Just imagine what the students would have been thinking when they saw an adult, nay, a police officer acting that way. They would likely have been intimidated and shocked by this.

I have witnessed many disturbances in classes back when I was in high school. Never was it necessary for a student that was seated to be thrown around by authority. There is such a thing as, detention, suspension, calling the girls parents etc. This was outright unnecessary.

What the other students were probably thinking is that they better not act like little shits.

You do not need to teach someone, or apply a certain rule upon them by instilling fear within them. Forcing someone to obey you by enforcing them or creating fear will not gain you respect. This does not create a good society whatsoever. If people no longer trust or respect those who are meant to 'serve and protect' than resentment towards police will surely grow.

Unless you want to create a society full of drones ruled by an iron first then sure, rule the people by fear. Attack the weak and enforce your power upon those beneath you. :|

I don't see a problem here.

If at the age of 15-16 you haven't learnt proper manners and respect for authority or others, odds are that regular teachings won't work. As someone who lives in Australia, let me tell you that an overly tolerant police or judiciary system fails. 

I doubt you were Mr Perfect when you were 15-16 years old. There is a difference between having bad manners, rebelling, respecting authority etc. 

If you disrespect someone's request, that does not give them the right to throw you into an object and then hurl you across the room. This is not proper discipline. It is also a breach of authority, something that you seem to have ignored. You can arrest someone without using unnecessary force. I never said she should not be arrested. The force being used is over the top.

I am sure a simple arrest would have sent the message. You on the other hand seem to support unnecessary violence, which means you clearly have not learned good manners yourself if you think that someone who likely has not broken any laws should be dealt with in such a manner. Especially given that Australia is country that takes pride in giving people "A fair go". Abusing teenagers is not going to fix any societal issues, in fact it will create more issues because it will cause more people to resent authority. 

If you were arrested, would you prefer the officer to still respect you as a human, arrest you without inflicting any harm, telling you your rights and taking you to the station for further questioning. Or would you prefer the officer to abuse you, and through you into the ground in a public place, causing further humiliation. 

I mean, humiliating someone and infringing upon their freedom is a breach of human rights. Generally there are exceptions to this rule, like if you were to murder, steal etc. This student on the otherhand just refused to do as she was told for the most part. That hardly seems like it is necessary to infringe her rights as a human. Does the crime meet the punishment?

However you have implied, that using excessive force on a minor will fix society. Screw murder and those other serious crimes, if a teenager is being rebellious, they ought to be handled with no care, right?

Like the police officer in the video, you go to unnecessary depths.

I wasn't perfect but I certainly wasn't putting myself in situations where I would then refuse to comply with the orders of policeman.

Refusing to comply with a policeman does give them the right to use appropriate force.

If I was arrested, I would be treated with respect because I wouldn't act like a dumbass.

You seem to imply that the student was complying and thus a simple arrest would have occurred. How much force should he have used? What is defined as excessive? 

As for the fair go, maybe that's why Australia has a higher recidivism rate than the US.

The old police hate.