Discrimination against atheists
Discrimination against atheists, sometimes called atheophobia, atheistophobia, or anti-atheism, both at present and historically, includes persecution of and discrimination against people who are identified as atheists. Discrimination against atheists may be manifested by negative attitudes, prejudice, hostility, hatred, fear, or intolerance towards atheists and atheism or even the complete denial of atheists' existence.
Source: Wikipedia — Discrimination against atheists (CC BY-SA 4.0)