As a rule I don't care for the Liberal Party. I particularly dislike that we've seen fit to elect a pretty man with no intellectual substance to the highest elected office in the land based on some amount of shallow charisma and a particular last name. 
Having said that, calling the man a "parasite" is inappropriate. There is a certain constituency that feels he represents them. Convince them that your opinion is more compelling and your side has a better solution. 
The kind of polemic, scorched-earth, hate-filled politics that we see in the US, emulated in your comment, has no place in Canada.
Good day.