In the 21st century, one can still find horse flop on Spring Street near City Hall in downtown Los Angeles. So much for the predictions of yesteryear,  in which we would be living in domed cities, get our power from clean, safe atomic energy and get around by personal jet pack or monorails. And the personal robots? Don’t ask.

I suspect this is a calling card from the LAPD’s mounted patrol, which was making the rounds Thursday.