I was recently at a church festival with my wife when she pointed out a nearby drone...I thought perhaps it was one of the parishioners filming the event until it starting buzzing the crowd of about 100 at a fairly low altitude of about 25 feet...I looked around to see if I could spot the pilot but could not...After several high speed low passes he took off across the highway and shot up very high over a small lake...The whole area is capped at a 200 foot limit even with LAANC as it is in the footprint of MKE so I know what 200 feet looks like and he shot past that...I am not the drone police but I was disappointed to see this sort of reckless flying and disregard for the rules...If he would have clipped anything at those speeds people would have been hurt...I saw a mixed reaction from some in the crowd...we left shortly afterwards.