Lady Magnon recently accused me of wearing a swimming costume that was so faded, it was almost impossible to tell what had been its original colour. It had in fact started life (about 15 years ago) as red, but is now a very flattering faded pink. I told her that it clearly demonstrates that I'm not a 'tourist'.
I know it's stereotyping, but the above photo does represent classic 'tourists'; you can spot them a mile off.
Going on holiday for many means buying a large selection of brand new gaudy 'seaside' clothes, and they wonder why they get mugged. Walk along the prom' in that stuff, and you're asking for trouble.
Most well-known Spanish (other countries are available) sea resorts are awash with pickpockets, con-men, immigrant gangs, and other general criminals, all of whom are just looking for gullible tourists.
So take my advice, when on holiday try to look like a local; old clothes, no flashy cameras, no studying of tourist guides in pavement cafés. And don't forget, when travelling, take HALF the amount of clothes you think you'll need, and TWICE the amount of money.