extremists

As nouns the difference between dogmatic and extremists

is that dogmatic is one of an ancient sect of physicians who went by general principles; opposed to the empiric while extremists is .

As an adjective dogmatic

is (philosophy|medicine) adhering only to principles which are true a priori , rather than truths based on evidence or deduction.

As nouns the difference between patriots and extremists

is that patriots is while extremists is .

As nouns the difference between radical and extremists

is that radical is a member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism) while extremists is plural of lang=en.

As an adjective radical

is favoring fundamental change, or change at the root cause of a matter.