How to prevent crime happened ??

as far as your house, go through and make sure you have all windows lock and if you can take a pole and stick in between windows and sliding doors. keep all your bushes in front of your house trim really low so you can if someone is trying to hide. look around and see who and what's around you. if someone tried to rob you don't fight with them unless you are crazy like me.. give them your money or car.. everyone need to watch out for each other and call the cops if they something going on. never go out alone go in groups of twos or more.

Unite all the people in your locality and try to catch them....and if caught give them a good beating so that they will never forget....and other won't dare to come back again....But the main thing is unity....

I don't fully understand you, but if you meant to prevent criminals from breaking into your house...then i think this thing depends on where you live and the life style that you live. If you have lot of materials you will always attract lot of criminals, things like playing your music louder so that everybody can hear, bear in mind that even the criminals are listening. Driving flashy cars can again attract criminals as they will think that you have lot of money But i think if you live in a safer surburb where the security is always tight then you can experience fewer buglary. Again if your house is fully secured in terms of security alarm and having burglar proof then you can say you are protected. But again if the criminals are out to get you...meaning they are badly in need of you then the chance are that you are not safe at all. Because those guys if are in badly in need of something....their mind becomes somehow crazy But if you are that wealthy and you fear about your security then you can always get yourself a personal BODYGUARD