Know who is behaving abnormally, like those repeatedly invading others personal space, since they could be potential assailants. Take a mental note of all the ways you can exit an area quickly, in case a situation suddenly escalates. Keep your periphery active by moving your eyes around, which will help you anticipate obstacles in advance.  Your periphery is the outer boundary of your vision, what you indirectly see when staring at things. Practicing these behaviors will help you see violence before it happens, and give you time to prepare a response should you need one. Indications of this can include nostril flaring, excessive swearing, an out-thrust jaw, dilated pupils, or a whitening face. Once adrenaline begins pumping through potential assailants, their behavior becomes more difficult to predict. Be prepared to defend yourself no matter what they seem to be doing. Talk to your potential assailant and try to get him to step down or see the value of making truce. If you've got the gift of gab, here's where you can use it. Keep your guard up while you negotiate.  Say something like: “I don’t want either of us to get hurt. Can we try to just talk this out?'” You can also try saying: “What’s the problem? Is there any way I can help?” Avoid saying things like “Calm down buddy” and “Take it easy,” which can increase tension. The primary objective of a fight should be to protect yourself, not harm the other person. If you believe you are in serious danger, try to exit without causing the other person alarm. Whether or not you actually end up in a physical altercation, your opponent can no longer damage you once you’re gone.  There are a select few times when fighting will prevent future problems, but on the whole, you win 100% of the fights you defuse or avert entirely. Know your limitations. Going to the hospital with a broken nose might not be worth the "cred" that you get for staying in a losing battle.

TL;DR in Indonesian:
Perhatikan situasi sekitar dengan saksama setiap saat. Perhatikan bahasa tubuh yang agresif dari orang yang berpotensi menyerang Anda. Cobalah meredakan ketegangan dengan dialog yang menenangkan. Tinggalkan area perkelahian jika memungkinkan.