While its roots are religious, tied to the god Krishna, Holi is also seen as a celebration of good versus evil, and of a good harvest.
This is additional taxonomy that helps us with analytics
How and where to celebrate Holi in India - Lonely Planet
The Hindu festival: Holi events and how to celebrate
Colored powder flies as Hindus celebrate Holi
Colored powder flies as Hindus celebrate Holi
India celebrates Holi, the festival of colours - ABC News
Celebrate Holi, the Hindu Festival of Colors
Bay Area rains fail to shut down vibrant Holi celebration
Colored powder flies as Hindus celebrate Holi
Oklahoman Holi Festival of Colors brought hundreds of people together
NBC News - Colored powder flies as Hindus celebrate Holi
What Is Holi and How Do You Celebrate? Holi festival of colours, Festival photography, Holi photo
Jumping Joyful People Stained in Colorful Powder Celebrate Holi Festival. Friends Dance, Have Fun at Hindu Holiday on Stock Footage - Video of joyful, friends: 244384582
Holi Festival: Inside The World's Most Colorful Celebration