Lessons from Anti-Vax: Ignorance, Misinformation (& Autism)
The Anti-Vax campaigns taught us many things about misinformation, ignorance of science, and the impact of social movements. You can also roll in there the fear of vaccines causing autism - how a single non-reproducable study spread such a widespread and ill-founded outrage.
Perhaps in your world, there are incorrect and ignorant beliefs about magic.
Ties to Religion & Culture
Just about anything in culture can be seen through a religious lens and have its own bend. Take your pick here.
Culture is much the same, like the practice of female castration  , or other genital mutilation practices.
More Sinister Conspiracies
Perhaps there is a power in control (or seeking it) who is purposefully manipulating the people. This can be a more subliminal thing like the psychological tactics that marketers use to induce consumers to purchase products. It can be a darker or more covert thing like fake news or false information to influence public beliefs, incite anger, or distract the public.
Perhaps it goes even darker than that, that these schools are getting too wealthy a profit, that the cemeteries are in on it too, and that the banks love foreclosing on these education loans. Some movies along these lines are : Daybreakers, Thank You For Smoking, The Big Short.
Maybe one wizard has a contract with Chutlu and needs the human sacrifices... (See South Park episode Brittney's New Look).
Toxoplasmosis, Nematomorpha, Yersinia pestis
2 parasites and a bacteria that influence host behavior one way or the other to benefit itself. Toxoplasmosis  causes humans to behave in a manner that influences cats to bite them to spread to more cats. The second  lives inside preying mantises, consuming them until they are an empty puppet and completely controlling them. The last  is responsible for the outbreak of Black Plauge in New Mexico, it influences its host fleas to behave in ways that get it eaten, so it can spread.
Multiple Reasons: Everything is tied together
In our day, just about everything is tied to everything else. For example, right now depression is on the rise and this can be linked to obesity, high average consumer debt, etc.
Do not be afraid to draw from multiple reasons from multiple areas.