Proportionate representation versus civil rights

Is proportionate representation as a central policy the way to go?
Beliefs that racism and extremism exist in some european parliaments might be better addressed if civil rights prevailed rather than proportionate representation. For instance, as called neo-nazis’ protest marches through Jewish areas in Berlin were permitted on the basis of freedom of speech, even though uncivil.
Every situation is thought to be unique, and freedom can be over substantiated. For instance, an answer to the question,Does the action violate some individual’s civil rights? In the case of the Berlin marches, is yes; and it may lead to hate crimes.
Politicians representing racist ideas and policies are an influence in the wrong direction and detrimental to society.
With regard to the study of hate crimes, war is thought to be a main factor, leading not only to crimes of retaliation; but can a soldier who has killed needlessly, that is because of a concept of supremacy, stop hating when he returns home?