Common Sense Media gave this thing 1 out of 5 on violence?! It's why I saw this thing, and why I so regret it now.
This is a good, entertaining movie for adults and older kids, but it's essentially your usual PG-13 summer action blockbuster done with kids' blocks, which means relentless death and destruction.
Would you take little kids' to see the newest Transformers or Pirates of the Caribbean movie? Because The Lego Movie contains an even wider and wilder orgy of violence than those. I honestly bet that all 19 of those movies combined have less "action" screen time than The Lego Movie, which is essentially one action montage after another. Characters are CONSTANTLY punching, shooting, chopping, exploding, crushing, blasting, decapitating, impaling, freezing, and killing each other in this thing. How about several intense scenes of torture, where heroes are trapped in punishing devices, fearful for the unknown pain of what's coming next? To show that the villain of this movie is so evil, he takes the peaceful mommy and daddy of his own FRIEND, and murders them before the son's eyes (by gluing them stiff.) How about the protagonist (nobly) committing suicide in the finale of the film? Aren't these great lessons for your young one?
And it's not just that these things happen in the movie either - it's that they're played, scored, shot, edited and "acted" as if it's a full-grown adult movie (dark music, agonizing tension, characters screaming or crying in pain and confusion.) Older viewers will get the satire, but not little kids. Our theater's under-6 crowd was not exploding with laughter or cheering throughout this film, as they were likely too busy silently deciphering the insanity before them.
Oh wait, there's no blood, and they're just toy blocks, so whatevs. And don't worry, small children, the hero and parents eventually come back (but not the decapitated wizard, he is now a ghost forever.)
I even thought it would be a neat treat for my kid to finally see Batman in action. But then the film makes him a weird, self-absorbed jerk. And the advertised appearances of DC superheroes, Star Wars, Lord of the Rings, etc. are all the puniest of cameos, except for Batman, who is a death-metal-loving, girlfriend-betraying bully throughout the flick.
A PG-13 might be a bit much, but this is easily the hardest and darkest PG movie I've ever seen.