Those of us who are USA natives over 50 yo were born into a high trust society, in which if you stayed out of the worst areas, not much predation was likely to impinge upon your circumstances from thieves. We are beginning to see what life in a low trust society will be like. Oh sure, YOU can be still be trusted, since you live your life with the same integrity that you were taught and keep internalized.
The media-instilled excuse of "people just need jobs" is nonsense. They did not steal your stuff because they wish for but don’t have jobs. If you don’t believe it, leave your current pair of steel toed work boots that you have been using (when mixing concrete or doing your plasma cutting or welding work) out by the picnic table at each campout in the future. Your nice cooking gear, chairs and mat may disappear, but not the boots. Individuals of low/no income who are desperately looking for work would want the boots...
We keep a wireless router running in our camper that is not connected to anything, just emitting it’s wireless SSID in the open. Thieves typically DO have cell phones. They may see the “wireless network available” notification pop up on their phone when they get near. the camper. “RV CrimeCam #5” is the SSID that ours broadcasts out into the open. (You might want to be creative and have your provocative faked wireless network SSID be “ICE Mobile Van #3” or similar. We were told by the originator of the provocative SSID broadcast idea that such an SSID can really clear out excess customers at a Home Depot in some locations).
If the camper is still there after the miscreants visit and the storage bin and entry door locks were unmolested, consider yourself fortunate and just replenish the missing chairs, mat and such with dowdy looking replacement items obtained from yard sales. Good chance then that the crooks will pass your stuff up next time and go get what the first time campers in the adjacent site have deployed right out of the box from new.