Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
You're right, I'm sure Tim Cook gave these special Apple Goons a pep talk before they went there, saying, "Look, I know it's days before the event, but make sure you rough up any homeless people you see, because that will help reinforce our tough image and up our street cred."

Or maybe Apple contracted with some security company with instructions merely to "keep folks from messing with the decorations in the week leading up to the event", and gave them Apple shirts to wear so it'd be evident to police (and/or folks looking to mess with the decorations) why they were there, and the guards took it upon themselves to approach the homeless guy.

If you're hired to "protect this thing right here", and you're standing around all day, you can take the Buckingham Palace guard approach and be quietly hyper vigilant, or you can slack off and maybe get in trouble, or you can try to keep busy and start looking for things that "might be" part of your job - essentially widening the net until you catch something that "needs" doing, so you can report and/or feel like, you've done something. I'd guess these guards fell into the latter category.

You're concerned about the homeless (that's good), and you're assigning motives to Apple. But the two things are not necessarily related. If you get a bad hamburger at McDonalds, its probably not because Ronald McDonald came to your local McD's and gave specific instructions that you should be slighted.

The guy was on the footpath. Apple gave instructions to keep it clear, obviously. Apple is responsible for what all its employees and contractors do, regardless. It can't delegate responsibility.
 
So, as we come into the final stretch before today's "Hey Siri" presentation, I know we all have one last burning question on our minds that has remained unanswered from this thread - what precise hue _is_ the blue background of the "Hey Siri" image on Apple's website. Well, I'm glad you asked. I couldn't sleep, was bored, and was messing around with a graphics library (GD) with Perl on OS X and this happened:

Using this image file from the webpage "Apple Events - Special Event September 2015 - Apple"...

I used a flood fill (in Affinity Photo) to select the main dark top field, then shrunk the selection by 10 pixels (to avoid any problems at the edges). Used that to make a mask image (showing where the selection was), and fed the original image and the mask image into a Perl script I threw together to tally all the pixels in the masked area, and sort them by hue, then graph the results (horizontal dotted lines on the graph count every 10,000 pixels of a given color). Using the major (spaced every 30°) color names from the "RGB color wheel" on Wikipedia's page on Tertiary color and filling in the 15° color names from Wikipedia's Lists of colors page.

And here's the result: 91% of the pixels in the main dark top field of the image have hues of 250° or 251°. This places them between traditional Blue (full-strength blue with no red or green, #0000ff, at 240° on the color wheel), and Ultramarine, at 255°. Traditional Purple (full strength red and blue, and no green, #ff00ff) is at 300° on the color wheel, and far, far removed from the colors found in Apple's image. And this accounts for every pixel in the selected area, not just a random sampling (they're displayed on the graph using their original hue, saturation, and brightness). So there you go. Now we can all go into the presentation with calm and settled minds.

bluegraph_resized.png
 
Man I am becoming one of those people who does not really want to buy anything new.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.