One thing I have learnt in the university in Canada is that you have to do your own research. The prof will only feed you the general idea, then you'll have to find out yourselves.
Since this is an educational class, I'll give you some guidelines/questions to think about.
1. When the Charter of Rights was built, what was the population?
2. When the Charter of Rights was built, how many cultures were existed in Canada?
3. As time goes by, what is the least proportion of the government in order to pass a law? For example, currently there are 309 seats in the Members of Parliament. So, how many seats do we need at least in order to get the proposed law to pass? What's the least percentage?
There you go. Do your own research! Enjoy!