stimming

slurs

hate crimes

cannibalism

vomit

fire / fireworks

alcohol / drugs

illnesses / physical health issues

seizures

loud noises

mentions of medicine / hospitals

doctors / medical procedures etc ^^

shootings / school shootings

abortion / anything related to pregnancy

car accidents / crashes

bones / exposure of bones

animal abuse

veins / wrists

i got this from the replies:

trichotillomania-a disorder where you rip your hair out

dermatillomania-a disorder where you compulsively pick at your skin

thalassophobia-fear of the ocean/dark water

knifes / blades / razor blades / sharp objects

textures

white supremacists / kkk / nazis

ableism

motion sickness

chewing noises