Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: why do the Command Strips, when removed, pull the paint & sheetrock off the wall
Document: These are used to hang pictures and other items on your walls without having to put a hole in your wall. I have used the regular Command hooks so I was familiar with the way Command Strips work. They can easily be removed with a simple tug, stretch and pull.This seems kinds strange to not use a hammer and nail to hang a picture but sometimes you don't want to put a hole in your wall whether you're renting or even just want to hang something up temporarily.
These hanging strips were very easy to use and do a great job holding the pictures up on the wall. There are instructions on the back of the package that are easy to follow. After hanging one picture, I did then remove the strips to see if there was any damage to the paint. They came off clean with no damage! (Should note:  this is a very pale wall, but there was no damage to the paint, nor was there any residue of paint on the removed strip.
There were no instructions on the packaging as to how to get the strip off the wall so I very slowly and gingerly with a blunt knife tried pealing the strip off. It ended up damaging my drywall and paint. When I contacted the 3M company they told me that they have instructions on how to take the strip off the wall without the pull tab on their website. I told them the instructions should also be on the packaging. After this experience, I would not recommend using these strips.
If you read my past glowing reviews about these 3M picture hangers, you know I think they're the bees knees! These handy little strips are used all over my rental home. No holes, and so easy to use. I oil paint as a hobby, so hanging my latest work is a piece of cake, and when I create a new piece, I simply take down the old canvas, put four strips on top of the strips that are already hanging, pull off the backings and hang my new piece.
My daughter and I solve many puzzles together and like to hang them on the wall. The only way to make sure we don't destroy the walk paint is to use the Command hanging strips. Medium is perfectly fine for all of our puzzles.
Sometimes it's better not to make a hole in the wall (rental, plaster, or both), and for those moments there are answers. I cannot speak for any particular brand of paint (not sure what's on my walls) nor for not following directions (I did), but it works. I've used command strips before, and they've always came off clean, but I must say that these are still in use and on the wall. I expect no issues when there time comes.
I bought these to hang up pictures that I bought for my newly redone room. I did everything the directions said &when I put the pictures on the command strips kept coming off the wall. & I tried to put them back up one more time&decided I didn't want them anymore so when I went to take them off it took the paint right off my newly painted wall. They do not work at all.
Command hooks seem to be all over the place, including offices and homes. I don't mind hanging things the traditional way (hooks or nails), but using the Command line makes it easy to quickly change things without making marks on the wall. As with the hooks, these picture-hanging strips go on and off easily if you follow the directions. Doing it the right way is particularly important to avoid taking some paint off with the strip.
I will buy more, however, to use for the stabilizing purposes that I mentioned above.I haven't tried removing any strips from the walls to see how cleanly they actually pull off, but my experience with other Command Strips (Command Small Wire Hooks Value Pack, 9-HookandCommand Large Plastic Hooks Value Pack, 3-Hook), I expect that they will live up to their promise.
Command mounting strips are quite handy as a removable double stick foam adhesive - for those who aren't familiar, there is a tab which you pull (slowly and carefully, particularly if cold) and the adhesive pulls off.The tricky part with command strips is that the pull strip needed to be exposed so you could access it. Putting Dual Loc on the command strip means that you can hide the pull tab. Dual loc is basically industrial velcro which doesn't slip. You can now use it to hang pictures.
Answer: Do they? They haven't for me. Pull and stretch downward, not sideways. I was moving a few weeks ago, and they do come off nicely.