Caution – Foreshadow

Caution ~ a yellow tape wrapped around one part of the park greeted me.  This is not the first time I’ve seen it.  It comes on and off.  
 
This is a little bit disturbing for me because I work around here.  Every day, I pass by the park to get to work. 
What is happening here?  Does this  mean, KEEP OUT for: 
 
Sleepers on the park 
moving in
 
Someone who wants to move in 
scavenger
 
Scavengers 
slug
 
Slug 
dog (2)
 
Dog 
cat
 
Cat 
ducks
 
Wild Ducks 
Geese During the Big One Drill
 
Wild Geese 
What could it be?  
 Aha!  A day in the park of fun 
sports day
  

And s-t-r-e-t-c-h: yoga

yoga in the park