This security guard has a man in a strangle hold from the rear as he escorts him from the premises. The man loses consciousness and the guard drops the man on his face.
Aside from maintaining enough distance to not get hit, closing the distance against a blunt weapon is the best option. Moving into a clinch removes most of the advantages for the weapon.
Conversely, stepping away keeps you at the effective range which is very bad. The victim here was slow to respond and took a lot of damage, but ended up in a better position toward the end of the video where it ends without a satisfying conclusion. The aggressor even threw away the stick when he realised that it may now be used against him.
This police officer is outmatched in hand to hand combat and could have been strangled to death if backup didn’t arrive. He is also lucky that the suspect wasn’t able to apply a more effective choke earlier, otherwise there would have been plenty of time to strangle unconscious and murder the officer.
This video demonstrates that guns are not a trump card and can potentially be overcome even by a person who is unarmed. It is also important to recognise that grappling skills in this specific situation represent the only way to survive.