The mugshots provided are people who were arrested or booked for alleged theft related charges, according to the Merced County jail website.
Merced County theft suspects are posted every Saturday.
Link to prior mugshots provided for some suspects.
https://california.arrests.org/search.php?fname=Miguel&lname=Olivares&fpartial=True
https://california.arrests.org/Arrests/Miguel_Perez_32728455/
https://california.arrests.org/search.php?fname=Martha&lname=Navarro&fpartial=True