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Yes, but it is not a perfect world we live in. However, nobody requires average citizens to wear body cams. They are smart if they do it the way I outlined.
There are two sides to "surveillance".
1) If everybody is always 'surveilled' then 'crimes' are controlled, because there are no secrets.
but
2) Surveillance stifles individuality. It leads to obedience but prevents growth. It stops the bad but also stops the good.
So there has to be some middle ground. The wisest person would say "no artificial surveillance ever, let people learn through senses", but most people want technology to give the greater society an immediate edge. When you force 'police' to wear bodycams you are also forcing regular citizens at some point in the future to wear them, in other words causing a lifeless society of obedient rats. Police do commit crimes at a higher rate than the general public, but they are also a subset of the public.