Draw a line you don't cross

There is a fine line between constructive criticism and being down right rude. I often wander if those that like to critique others really even care when they cross the line. Do they even know they have crossed the line? Why do they feel the need to critique and judge? Why don't they avoid it if they don't like it? Their critic is their opinion and they are sure entitled to it but there are times when we need to keep our opinions to ourselves. Just because it pops in your head does not mean it should just as quickly pop out of your mouth. Sometimes you got to draw a line that you don't cross.