You sound like the kinda guy who backs dirty cops and approves of abusive action by authority because they were not properly respected as they think they should be.
From the video it seemed clear they were on a major highway where speed limits tend to be 60 miles an hour. It also appears there were temporary signs up stating the MPH was now 40. The young driver and his pregnant wife obviously didn't see those 3 foot speed limit signs and the guy said he wasn't going to sign the ticket until he was shown the temporary sign.
the cop should have told the kid that signing the ticket didn't mean it was an admission of guilt, just that he had been issued one. If he would sign it then he could follow the cop back around to the previous sign and see for himself.
The cop was obviously pissed his authority was questioned. If he was going to arrest the vicious thug he should said so.
I will look for you another great thread here on FR where a NO cop takes young brazen handcuffed drunk lady into a room and leaves her in a pool of her own blood for making him angry and not respecting him enough. You will love that one. She really got what she had coming to her.
Don't bother. You're not one that warrants further conversation.