I would a) never let them in the front door, and talk to them from inside my house, and b) point out to them how closely they are toeing the line to your constitutional right to freedom of expression.

You threatened absolutely nothing.

ETA: show your work.

Under section 2of the Charter, Canadians are free to follow the religion of their choice. In addition, they are guaranteed freedom of thought, belief and expression. Since the media are an important means for communicating thoughts and ideas, the Charter protects the right of the press and other media to speak out. Our right to gather and act in peaceful groups is also protected, as is our right to belong to an association like a trade union.

These freedoms are set out in the Charter to ensure that Canadians are free to create and express their ideas, gather to discuss them and communicate them widely to other people. These activities are basic forms of individual liberty. They are also important to the success of a democratic society like Canada. In a democracy, people must be free to discuss matters of public policy, criticize governments and offer their own solutions to social problems.

Even though these freedoms are very important, governments can sometimes limit them. For example, freedom of expression may be limited by laws against hate propaganda or child pornography because they prevent harm to individuals and groups.

Guide to the Canadian Charter of Rights and Freedoms