Major League Baseball started testing for performance enhancers in 2004 and the first punishments administered after a positive test a year later were for 10 days. This caused so much ridicule a first offense became a 50-game suspension a year later, and that eventually grew to the current half-season.
This established a pattern for the commissioner's office in which it dived in headfirst to address a problem, and offered an initial solution that was more embarrassing than the problem itself.
Giants catcher Buster Posey was run over at the plate by Miami's Scott Cousins in May 2011, suffered a broken leg, and a star for the defending champions was lost for the season.
This started the conversation that led to the 2014 rule declaring catchers could not the block the plate and runners could not collide with them. Several umpires demonstrated the absurdity of the letter of that law by calling safe runners who were out by 15 feet because the catcher was loitering with a foot on the side of the plate.
Logic intervened after a while, moderate blockage was allowed and now disputes are infrequent and can be settled by replay review.
The collision controversy moved to second base in the fall of 2015, when Chase Utley, a Dodgers second baseman experienced at being taken out on a double play, body-rolled into Mets shortstop Ruben Tejada during the NLCS. The result was a broken leg for Tejada and a rule change in 2016.
Again, there seemed to be over-the-top enthusiasm for calling out runners for any hard slide — even if it wasn't high, late or indirect toward the bag.
That hard slide into second is basically extinct now for two reasons: Umpires are going to err in favor of the fielders, and the defensive shifts have greatly reduced the frequency of the traditional double-play pivot.