Security measures for your home are about the best thing you can do to make sure it is not you being victimized. Installing cameras that will record the images of people breaking into your home, or alarm systems that will alert authorities if an intrusion happens is going to do a lot better than relying on neighbors to do something, but unfortunately these types of security measures only help once an intruder is inside the house. If you lived on enough land, perhaps you could get an alert in time if someone crosses onto your property, but most people in Las Vegas do not have the luxury of enough space that this would have an impact. Bad people are usually only a few steps from your front door when they are walking down the sidewalk or driving by in a car, so the amount of time it takes for them to get inside and steal from you is minimal, and the alerts will usually get the police out there too late.
What you need to do is prevent the criminals and bad people from getting into the house in the first place. The easiest way to prevent entry is to create a barrier that they cannot get through. While some people may think that a door or window is a deterrent, thieves realize that a standard door can be kicked off the hinges quite easily. They are made of cheap woods and pressboard, and even though the deadbolt is good quality the door will break around it if kicked hard enough. Glass windows provide almost no security at all except the sound they make when broken. This leaves you with iron security doors.
An iron security door is going to be constructed in different styles depending on your preferences and your desired level of security. They can be solid and look like a regular door, or they can be made of ornate scrollwork. When done correctly they are welded at all the joins and are created from iron thick enough to not be able to be easily bent or cut. A good iron security door is going to prevent unauthorized access to your home by simply making it too difficult for a thief to want to undertake it, generally resulting in them moving on to the next house. Las Vegas isn't the community it used to be, and unfortunately people do not look out for each other any more. That means that you are going to have to look out for yourself, and iron security doors, gates and fences are your best defense.