When it comes to astrological signs, the most evil zodiac would depend on the observers zodiac. If you are for eg: a Taurus, certain zodiacs would appear as evil to you due to the clash in ethics, logic, understanding, character and even the way they form a sentence and arguments. And its different for each zodiac but there is a visible pattern to it. That's why your friend don't dislike the people whom you hate in the same way as you. Same goes for any question regarding astrology. Its the observers zodiac what makes him perceive things done or said by others as good or bad. This would be the reason behind different forum members tend to agree on their views and some others disagree with them provided no social standards are maintained throughout the conversation.