Coco is a bit problematic (spoilers)
First off, amazing animation and visuals, and great characters. Now on to my other opinions on this movie:
So I put 10 and up in the reviews, and this is pretty give or take. If your child will not understand what I'm about to tell you, even when explained in simple terms, don't let them watch it. Because in my opinion, if you watch a movie that you know is problematic, you should make sure you understand exactly why.
What I want to address is the use of border patrol in this movie. It is not at all inherently wrong to put this in the movie, as it is an important message to portray to both children and adults that the systems in place are not at all good, and even hostile. However, the ending is the problem. The ending ends with these systems still in place, and also don't address them towards the end. They use these systems of breaking up classes, border control, poverty, all of these great messages that could have come of them, for what? They simply characterize Hector as a victim of these unjust systems, and then just leave it at the end, not addressing or shutting down the systems in the end, and instead just having Hector use those exact same systems to get by past the bridge. That's it. No message about the things they'd been setting up about for like the whole first half of the movie.
I do not blame anyone for not noticing this, as I did not the first time I watched it. Only after I had just been thinking about things from a Marxist lense, we watched this movie and then I noticed the classes, the harsh poverty, border patrol, etc. And was extremely disgusted by the ending. There are even plenty of movies that address these issues and then create a message about them, without changing the systems themselves. This is what could have happened to Coco, but it didn't. I'm sorry to those of you who loved this movie, it's just my opinion.