I will preface this by saying I haven't seen the offending message in person and will hopefully see it tomorrow.
Had a call from DC2's friends mum in the course of which she mentioned that DC1's TA isn't vaccinated. When I queried how she knew, she said the TA has an anti-vax sticker on the back of her car. I find this a bit off, she parks the car on the school parking spaces and all the children walk past the row of parked cars on the way into school.
Am I totally unreasonable to think she shouldn't be allowed to promote anti-vax sentiment on school grounds? The children are old enough to be vaccinated.
YABU she should be allowed to promote anti-vax.
YANBU a school is not the place to promote anti-vax, even on a teacher's car.