Mistake of anyone like one of above may result in major mishap.
If every body will ignore rules of the road and think of his/her own-self, then the chances of accidents will increase manifold.
YOU must not let the things go like the above. If you can have approach to authorities / media, such things needs to be reported to them, for further appropriate action.
YOU must practice and always follow safe driving habits. By doing so, you will always be able to remain safe even when few persons like above may continue to move around you ignoring safe driving rules.