This poster was put up by an unknown Samut Prakan whistle blower. Refering to mata makan money, involve in yaba and illegal foreign labour. Whoever that put this up got bolas cos its only a matter of time, they find out who did it.
Using Thaigrish to do a rough translation:
“Set up road blocks to check people. Check yourself at the mata house better. (The two letters in black is Sor Nor which means Mata house in BKK, outside BKK is call Sor Por). Sell Yaba, distribute Yaba, traffick foreign labour.
Samut Prakan residents run out of patience liaoz. Everyday road block but yaba still so many. Never really catch (refering to yaba).
Call army also useless. Call them they also not interested.