CRIMES AND QUESTIONABLE BEHAVIOR CAUGHT ON TAPE, ON "20/20," JULY 11

Plus: John Stossel Says "Give Me a Break" to Police Who Do Not Always Follow the Law

And: Could the Secret to Tiptop Legs Be a Simple Flipflop Shoe? Bill Ritter Reports

Cold-blooded murder on the side of a country road; a mother hosing down her crying child at a car wash; a fight on a school bus � all shocking scenes caught on tape and posted on the web. What really happened behind the grainy images seen online? "20/20" reports on these events, all of which became internet sensations, FRIDAY, JULY 11 (10:00-11:00 p.m., ET) on the ABC Television Network.

Reports include:

� A routine traffic stop on a country road in New Hampshire last year turns to murder � and it's all caught on the dash cam video of the police cruiser. Who will survive � the police officer, the man he pulled over or the man watching from the side of the road � and who is to blame? Juju Chang reports.

� A mother caught on tape hosing down her toddler at a car wash is now facing possible time in prison, charged with felony child abuse after she was caught on surveillance camera. What led Niurka Ramirez to lose her cool with her child, and was the water pressure really as bad as it looked on camera? Ramirez speaks to JuJu Chang about the incident.

� It was a scene hard to forget -- 15-year-old Samantha Taylor fighting with her school bus driver, at first yelling and screaming, and then physically wrestling with the driver and her daughter. Both fought back. The entire incident was captured on a security camera and posted on YouTube. What were the reasons behind the disturbance, and who is to blame? In her first interview since the incident, bus driver Kim Sullivan tells Deborah Roberts that she has no regrets. "I did what I had to do to make the bus safe." Roberts also speaks to Taylor.

Plus: Can the police punish you for rules they ignore? In Warren, Michigan, one cop alone issued almost 4,000 tickets last year for running stop signs. But when people complained to Detroit's ABC affiliate WXYZ reporter Heather Catallo, she took her cameras out to see if the cops stopped at the stop signs. Most, it turned out, did not. John Stossel asks Warren's police commissioner if this is just a moneymaking scam. To all those cops who would punish us for what they don't do, Stossel says, give me a break.

Additionally: Flip flops on steroids� that is how some people describe Fitflops. They are stylish shoes that claim to trim your calves, thighs and other parts of the body with every step taken. With that promise, no wonder over a million pairs -- at $50 each -- have sold in the past year. But do they really work? Bill Ritter reports.

"20/20" is anchored by Elizabeth Vargas and John Stossel. David Sloan is executive producer.