I installed barbed wire across the top of the baby's crib
What made you think that it was okay to use barbed wire on a crib?
I did this because I don't want the baby to fall out of the crib and be crushed
The barbed wire is very sharp, you should reconsider. It can be dangerous for the baby if they grab onto the wire!
Um, that's not a good question, you're saying I can't put wire there? That's stupid.
There are a lot of safer alternatives to barbed wire. Barbed wire can really hurt a baby and you should keep sharp things away from babies to protect them.