We're not going to blame all the people working at the airports for handling our luggage as if they were all NBA superstars in the final quarter of the Playoffs. We know that they have to handle countless numbers of suitcases each and every day. Yet, if you've ever worried for the safety of your belongings, you could just slap on a "FRAGILE" sticker onto the body of your suitcase.
This is definitely one of those tips that should be used only when you truly need it, though. If this gets overused, they'll just start ignoring the fragile stickers, making this effectively pointless.