You can't be too careful these days.

For example, I'm with the Romney campaign, and think we should take a harder line against those dirty reds over there in commie Soviet Russia.

I use to be able to quote that almost from memory, I love that book. I like Gertrude McFuzzy which accompanies Yertle and then The Big Brag, great stories with good moral messages.

Found this at Wik

“A stack of turtles drawn similarly to those featured in "Yertle the Turtle" first appeared on March 20, 1942, in a cartoon for the New York newspaper PM, where Seuss worked as an editorial cartoonist. The illustration shows two stacks of turtles forming the letter "V" on top of a large turtle labelled "Dawdling Producers", with a caption reading "You Can't Build A Substantial V Out of Turtles!"

Seuss has stated that the titular character Yertle represented Adolf Hitler, with Yertle's despotic rule of the pond and takeover of the surrounding area parallel to Hitler's regime in Germany and invasion of various parts of Europe. In 2003, reporter John J. Miller also compared Yertle to the former Iraqi president Saddam Hussein, saying that "[i]ts final lines apply as much to Saddam Hussein as they once did to the European fascists".
Though Seuss made a point of not beginning the writing of his stories with a moral in mind, stating that "kids can see a moral coming a mile off", he was not against writing about issues; he said "there's an inherent moral in any story" and remarked that he was "subversive as hell". "Yertle the Turtle" has variously been described as "autocratic rule overturned", "a reaction against the fascism of World War II", and "subversive of authoritarian rule".

The last lines of "Yertle the Turtle" read: "And turtles, of course ... all the turtles are free / As turtles, and maybe, all creatures should be." When questioned about why he wrote "maybe" rather than "surely", Seuss replied that he didn't want to sound "didactic or like a preacher on a platform", and that he wanted the reader "to say 'surely' in their minds instead of my having to say it."

Guess it is subversive for all the right reasons!