Stocking up on food, water and medicine implies a long and protracted violent siege by the Justice for Mike agitators on the soon to be victims in Ferguson.
A Wag with a certain attitude might suggest that stocking up on guns and ammunition might allow one to get by without even having to stockpile browning bananas.
“browning bananas” ... watch the language. Jesse, Al, Benjamin Crump, etc. might be likely to consider that a racist statement.