an exposure in japan few years ago. in kyoto, we were staying at a small hotel in the suburb. within walking distance from the hotel, our ang mo guide guided us through a walk in the neighbourhood. we walked past a three storey stand-alone bungalow with cadillac in the front porch. there were men in full suit hanging around. later, we were told by our guide that it was the residence of a yakuza boss.
later, at a public bath, two of us, me included, went in to have a bath. in it, we saw a few of the 'henchmen' fully unclothed, full tattoos from shoulder to ankle. they did not bother us at all.
in my view, they usually do not bother others, as they are not petty criminals.