I spent a day last weekend at a picnic with a big group of NCT friends and their partners/ husbands. All our kids are 3 ish now and some have littler ones too. All the kids played nicely ( around 20 kids) apart from two. These two have perfectly lovely parents, who did try to correct their behaviour to no avail. Is it a consistency or wording thing, as in maybe they don't correct them at home? These two children were shouty, grabby, rough and one kept taking other kids food or toys by snatching it away from them aggressively.
Now my DS is a bit of a wall flower these days, he's pretty shy. However he has not been prefect as around 1 yrs he went through a hitting phase. I had to follow him around all the time to stop him before he lashed out and tell him no instead of getting to chat with the other mums 
So aibu to think these parents weren't parenting enough or was it just luck for the rest of us ? My DS doesn't get threats like no more tv if you do x at the moment, so I see 3 is a tricky age. However most of the kids would be in some sort of preschool so surely used to being around other and this bad behaviour from a few isn't allowed there ?