I don't think it's as easy as "normal" = normal vs "strangeness" = murderer.
For me, I am quite clumsy and often trip on my feet or uneven walking surface, and sometimes I lose my balance a wee bit. It could easilly be interpreted as that I'm drunk or on some other substance.
I also don't really move my arms when walking, unless I conciously think about it.
And I walk extremely fast.
And people interpret my casual glance as a stare.
Not sure how those things are interpreted by others, but I can understand if they're caucious whithout thinking I'm a potential murderer.
/Mats
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