Here is a procedure to produce elemental bromine using KMnO4 as an oxidizer. Mn7+ in KMnO4 steals electrons from Br- in HBr, converting it to Br2, a red, extremely reactive and volatile liquid. Do not attempt this if you do not have a background in chemistry, bromine is even deadly and can easy injure or kill you.
This process is very similar to one done by Nile Red, here is his video:
https://www.youtube.com/watch?v=QM-cgWGBPqo&t=249s
