"Pure Evil," read one sign.
Sunday afternoon, dozens of protesters lined the street outside global headquarters on 800 Lindbergh Blvd, holding signs critical of the company's work with genetically modified foods.
It was all part of an international day of protest against companies in the business of genetically modified food. Local protests in St. Louis were led by Safe Food Action St. Louis.
Several police officers were on hand monitoring the protest.
Cars drove by and honked approval..
A handful of protesters were also spotted along Skinker Blvd, near Washington University in St. Louis.
In a company statement released to KMOX radio, Monsanto said in part:
We respect each individual’s right to express his or her point of view. We understand that topics such as agriculture and its uses – food, feed, clothing and bioenergy – are important to all of us.