After you read this and know what to look for, you will clearly see a child in the bathtub moving around and terrified.
Here is the image showing that it is indeed a bathtub/shower we're looking at: http://imgur.com/a/d7fcy
Now getting to the actual video. There is a small child in the bathtub. The man screaming is, from what I can tell, OUTSIDE of the bathtub and filming with a mop in his hand.
There is SOMETHING inside the bathtub with the child (will discuss this something shortly, and it might be much worse than a man beating the child).
While the child is inside the bathtub with the glass doors slid shut, the man repeatedly uses the mop to nudge and hit the glass door of the tub, from the outside, while the child is inside running back and forth.
When you watch the video again knowing where the child is... I am sorry to say this, but it is even worse.
Here are a couple of images showing you the placement of the child. Look at these, then watch the video knowing where the child is, and you'll see the child very clearly panicking and pacing around in the tub. At a couple of points, the child pushes on the glass doors with his or her hands as if trying to escape whatever torment is happening inside.
This first image is of the child facing the glass and wanting out. Please do not look at this if you can't handle, it's very bad.
This second image is of the child again trying to push on the glass to get out, as the mop hits the glass.
Here is the video in full (warnings apply): http://worldcorpo.net
Now that you know where to look to see the child, you'll see him or her frantically pacing around inside the bathtub. The man filming routinely wacks and swipes the glass door from with a mop (especially after issuing a command),
What has been established so far: there is a terrified child inside of a bathtub. There is a man hitting the doors of the bathtub.
Here I am going to offer a hypothesis. **Note that what I say here stands on its own and it has no bearing on the truth of what has been established above. **
Now, clearly something else is happening in the bathtub that is harming and scaring the child. Now that you know where to look, maybe you can figure it out.
If I were pressed to say what I think is happening, it seems that there are bodies or body parts hanging on the tile walls inside the bathtub. They may be dying or tortured somehow. I say this because you can hear several other voices moaning in pain in addition to the screams of the child and the commands of the man.
There is also what appears to be some kind of strobe light with alternating colors placed on the floor of the tub, with the flashing light aiming upwards. Strobe lights can be used to induce a state of trauma, trance, or suggestibility to commands. The Central Intelligence Agency has used them: http://ciastrobe.com/
Thus the idea seems to be to disorient the child's senses while causing extreme fear and trauma. In this disoriented state the man is giving the child commands. The child seems to be seeing things/bodies strung up on the tile wall of the bathtub and may have been drugged with a hallucinogen.
Another possibility is that there is an animal (or multiple animals and insects or snakes) in the tub, and the man is using the mop to agitate the animals and cause them to move around and possibly angrily bite at the child, inducing pain and trauma in the child. I say this because (a) the child looks at the ground/walls sometimes and abruptly tries to move away from it as if something is stinging or scaring him/her, (b) the man himself chose to be outside rather than inside the tub, (c) independent testimony from another child victim describes being put in a small container with insects (https://www.youtube.com/watch?v=sLgNm_ay4Sk)), so if this is the pizzagate/cia column/luciferian cult doing this, it is a familiar torture technique to cause trauma and disassociation.
Edited to add clarification and fix links.
Addendum from the comments**: researcher offers the following reminder which might be relevant to those who believe the Podesta brothers are involved.
Remember Podesta's favorite artist? Dogs, showers, and tubs seem to be a common theme
Look at this
this sick one
More tub theme
Dead man in a tub/shower