Carrying signs and eliciting honks from passing cars, protestors gathered at Five Corners in Vineyard Haven on Saturday morning to voice concern about the ethics of Monsanto, an agribusiness company.

Christina Montoya, 41, and Kristin Hall, 35, both of West Tisbury, organized the event locally, drawing more than 30 people.

The demonstration is part of a series of actions taking place around the globe called March Against Monsanto.

“I am here today because I believe Monsanto is a corporation that is completely run by greed and the desire for profit with no regard for human, environmental or animal health,” Mrs. Hall said.

Monsanto is a publicly-traded company that produces pesticides and genetically engineered seed. Its headquarters are in Missouri.

The protestors met in front of Tropical Restaurant, convening with children and pets before lining up along Beach Road to chant and display homemade signs. Mrs. Montoya said she contacted Tisbury police this week and received approval for the event.

David McDougall, 50, of Newburyport brought his two sons to watch the protest. Mr. McDougall’s aunt and uncle were participants. He said he brought his children so they could form their own opinions.

“It’s great that people are willing to stand up for what they believe in,” he said.