Is it rude for employee to not move to the left or right when walking past co-worker, as if he’s high and almighty & shouldn’t have to move?

Keep in mind he only does this to the lower-level employees, as well as ignores them.  In addition, he never holds the door nor elevator for them.  One time when he was locked out of the office and forgot his key card, he knocked on the glass door as one of the lower-level employees walked by.  When he heard the knocking and let him in, he didn’t say “thank you.”  Basically, he treats that department like they’re invisible nobodies.  Thus, the walking without having the natural reflex (like when you’re walking down the street in public) to move to the side.