What is the legality of biking on the side walk? I hate it.

Couldn't agree more. Bikes off the sidewalk!
And your dog shouldn't being doing his "business" on the sidewalk, either.
Sidewalks are for walking.
See my future blog post.

Is your friend's name Alec Baldwin??? Didn't the same thing happen to him? I, actually, have no problem with this, as long as the police apply the law fairly to everyone. We've actually told our kids that, once they are 18, they must carry id.

Donna Levine wrote Its wrong to ride without ID forget about police if you are in an accident you need id and your insurance card at all times. In my saddle bag is a photo copy of my license and an extra insurance card, a tube and patch kit. Remember there are two kinds of riders those that have been hit by cars and those who will be hit by a car.

Biking on the sidewalk is an arrestable offense.

In response to the question at hand ... I run and only want to carry my phone and a $5 bill. For Identification I carry a couple of business cards just in case something happens to me, I can be identified. Now as for riding in the wrong direction ... SHAME on him. People on bikes should obey the traffic laws and pedestrians should be able to rely on traffic of all types being where they belong and moving in the expected direction. Thanks for reading.

All I know is that living in the city and living on Long Island are entirely different worlds.

In many many ways...

For my own reasons, I pay close attention to how bikers obey traffic rules in Manhattan south of 59th Street and parts of Western Queens and Downtown Brooklyn, Dumbo, and Williamsburg. My observations include rampant disregard of traffic regs by bikers. A stark example includes the well-reported incident in Central Park.

Wow. I'm staying in CT where we can ride our bikes in peace. Here's some information about ID and bike riding...

“May I see your license?”

Here’s an interesting conundrum. You don’t need a driver’s license to ride your bike, but in at least one state (California) you will need to present a driver’s license or its “functional equivalent” (a state ID, a Passport, or a military ID) if you are stopped for a violation and the officer asks you to produce ID. Failure to produce the requested ID can lead to a trip to jail. So can lying about your identity, and not just in California. And the officer’s fishing expedition for evidence may continue here as well. If the officer asks about information on your driver’s license, he is still looking for evidence—for example, evidence that the information on your license is not up to date, which is another offense you can be ticketed for. Again, the best answers here are those that don’t incriminate you. If your license information is up to date, feel free to answer the officer’s question. If it is not up to date, have an explanation ready. Better yet, get your license up to date now and carry it, or other ID that law enforcement officers in your state accept, on your rides.

Source: http://www.bicyclelaw.com/p.cfm/legal-issues-for-cyclists/how-to-handle-a-traffic-ticket