The radical is the opposite of the extremist, for the extremist goes to the extreme edges of ideology and the radical seeks the core or "root of goodness" that cures the individual and society.
The most radical thing you can do in this world, in this era of paranoia and hate, is to love without frontiers. When you love with a passion that defies logic, that is stoic and steadfast, the changes are far reaching and profound. So be a radical and radicalize others - we are a social species born to love and be loved. Love people of other races and use language that shows you love how they are, who they are, their culture and way of life. It is a psychological hug, a way to show what you truly see when your heart is your eyes. Tolerance is for idiots, love is smart.