The lunatics are running the asylum academy

Exhibit A:

Exhibit B:

doi: 10.1080/00028533.2017.1375738

Exhibit C:

Exhibit D:

(Archived here.)

Exhibit E:
https://www.youtube.com/watch?v=kVk9a5Jcd1k

Exhibit F (follow-up to Exhibit E):
https://www.thecollegefix.com/portland-state-bans-professor-from-research-for-getting-grievance-studies-hoaxes-published/

Exhibit G:
Leftists weren't content to war only against science. Some of them have now declared war against mathematics, too.
EquitableMath is a project funded by the Bill and Melinda Gates Foundation, which advocates “shifting [mathematics] instructional practices to provide meaningful access to priority content while ensuring that those practices are research- and assets-based, and culturally responsive.”
In case you have trouble translating eduspeak gibberish, here's an excerpt:

White supremacy culture shows up in math classrooms when...
Students are required to “show their work.”

Commentary: Oregon Pushes Idea That Math Is Racist, Encourages Teachers to Dismantle White Supremacy, by Kipp Jones, The Western Journal.

Here's the source document:
https://equitablemath.org/wp-content/uploads/sites/2/2020/11/1_STRIDE1.pdf

(See twitter card.)