What the liberal establishment mean when they say Muslims have been radicalised

What does radicalisation mean?

If you propose a radical course of action, does that mean you are radicalised?

Extreme error requires extreme correction, does it not?

Is there anything inherently immoral about proposing a radical course of action if you think only radical action would solve the problem, whatever it is?

Is radicalisation another way of calling someone an extremist and is calling someone an extremist a way of marginalising and ultimately dismissing and ignoring his views? Radicalisation is a word you use to smear your political opponents. If you believe the status quo is perfect, then you would view any attempt to change it as subversive, evil and dangerous. But if the status quo is perfect, as you claim, then why is there a problem of "radicalisation"?

If you tell someone who disagrees with you that it is your intention to smear him, marginalise his views and then ignore his views after you have dismissed them as radical and extremist, do you think he will change his mind about whatever he thinks the problem is?