Target, NBA, Dow Chemical and Wells Fargo are among the companies participating in GLAAD's Spirit Day.

The 6th annual Spirit Day supports efforts to combat the bullying of LGBT teens. Supporters are encouraged to wear purple.

“Wells Fargo is firmly committed to standing against bullying, and by addressing this issue, we hope to create an environment where all students can thrive and find opportunity,” wrote John Lake, Wells Fargo's LGBT segment manager of enterprise marketing.

“Being bullied for who you are isn't right,” Target said in a tweet, “but it's real. Stand in someone's corner and #TakePride. #SpiritDay.”

The NBA tweeted: “The NBA is joining @glaad & going purple today to stand up against bullying! #SpiritDay.”

“On October 15, Dow will join millions of teachers, workplaces, celebrities, media outlets and students in the U.S. and around the world who support and participate in Spirit Day by 'going purple' on social media and by wearing purple, a color that symbolizes spirit on the rainbow flag,” Dow Chemical wrote in its website.