See the mortar to the left side of the picture? Notice the remote on the right that gives a scale reference? Well someone couldn't tell that scale reference meant the mortar wasn't real. Not to mention the action man and dog figures obviously not being life size..
read the story https://news.cnet.com/8301-17852_3-57569754-71/facebook-pic-of-toy-mortar-leads-to-armed-cops-raid/
read the story https://news.cnet.com/8301-17852_3-57569754-71/facebook-pic-of-toy-mortar-leads-to-armed-cops-raid/