As an American my best advice to you (which I naturally offer unsolicited) is to do your best to ensure that he always, always feels out of place and like he is taking up too much space. Never let him feel entitled to take up that much space, in the streets or whatever. Do not let that shit take root. If you want, maybe try to subtly enlist other neighbors in this effort by bringing up how large and awkward it is.

Never let that become normal.