Neighborhood Alert - 21st and Marion

from John Elliot on FB
Two guys, African American younger males, are knocking doors, jumping into people's yards and checking out houses along Marion from 21st through 23rd at least. Excuse is the guy wants "75 cents" or something if someone answers, but they try the door if they think no one is coming.
DESCRIPTION: 2 black males...shorter, maybe 5'6-9", short hair. One with a backpack. Other with a grey shirt. Knocked on my door twice. I answered the second. Scared off by my dog. Saw them scoping other houses without lights on. Called the cops when I saw one go into a yard while the other stood watch. Still haven't seen the cops roll by.