The alignment system can determine whether you are in good relation or bad relation with other members of your own racial paining. The policy is like this: you will loss alignment, or be closer to red state if you hit someone who is in your racial pairing. Moreover, the value of a negative hit is much higher than that of a positive one. According to the theory, several enemy kills can only negate the efforts of a single friendly kill. You can be killed by friendly targets if you are rogue because of hitting another player. Generally, your alignment is at the bottom meter in the window in which your life, stamina, and mana are located.