Should you cry in front of your child?

I had a strange dream last night in which I had a small child in my possession (someone else’s) and I had neglected him by not paying enough attention to the child, so he was crying. And at that moment I got very upset and felt badly for neglecting the child and began to cry myself.
But, then I stopped myself, and was wracked with this strange dream question, that seemed very strong at the time, which was, “Would it be damaging to this child to see me cry in front him? Would he subsequently feel unsafe like the person who should be in charge is no more in control of her feelings than myself… OR, is it good to cry in front of your child so that they know vulnerability is accepted and welcomed in you environment…” Any ways, I woke up this morning and just had to ask (caveat- I don’t have children of my own yet)