As an ideology, reactionism is a tradition in right-wing politics; the reactionary stance opposes policies for the social transformation of society. In popular usage, reactionary refers to a strong traditionalist conservative political perspective of a person opposed to social, political, and economic change.

All too normal, unfortunately, but I take your meaning: they’re a minority who seek power by drumming up hatred for the vulnerable. Solidarity is the only answer, and it’s why they seek to divide us.