SAN DIEGO (CBS 8) - More than 2,000 people protested Saturday in Balboa Park in the third annual March Against Monsanto.

The protesters are concerned about genetically modified foods, also known as GMO. They marched in unity with thousands across the country in an attempt to make the public aware about genetically modified foods. 

Protesters also marched to criticize Monsanto, a multinational agriculture company that has been a leader in producing genetically modified seeds for farmers.

CBS News 8's Angie Lee has more information in this video report.