A disturbed man who walks into a schoolhouse, orders all boys to leave, and then starts killing the girls (aged 6-13). He forces the remaining girls to line up against the blackboard, where he ties their feet together. He then methodically executes all girls with a shot to the head.

See Amish school shooting, Colorado Middle School shooting, École Polytechnique massacre, and many others around the world.

An Anti-Feminist hates women and wants to kill them.

AS A NOUN:
Someone, usually straight, cisgender, and male, who rejects the feminism movement (in this definition, the idea of reaching gender equality through the uplifting of women, who are oppressed in virtually all modern societies.) Antifeminists usually believe in gender equality, but do not believe sexism is as bad as it is thought to be and occasionally will even believe that women are treated better than men in modern society.
AS AN ADJECTIVE:
Having the ideas or qualities of antifeminists.

An anti-feminist is someone against the feminist movement, at any given wave. In colloquial terms, it refers to someone against the 3rd or 4th wave of feminism, which hold Marxist identity policies close to the core of their movement. Common arguments against feminism thrown by these new, egalitarian anti-feminists are the following:

* Social Justice "Warrior-ing" - The propagation of censorship and the lack of politically incorrect or possibly offensive discussion.

* Identity politics - A political sect that debates whether one can be superior or more worthy based solely off of race, gender, or religion.

* General disagreement with the core values of the movement - Most anti-feminists believe the movement has diverged into a left-leaning political weapon that doesn't attempt equality and pushes for a system of matriarchal oppression.
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Then there are the 2nd and 1st wave anti-feminists. They are classified as a non-egalitarian anti-feminist. The common argument to be against the feminist movement in general is usually "women are lesser". For those against only the second movement, it may be "women have different roles in life".

Some one who's is thinking a feminist is wrong for making a wierd argument (and is right)