So you asked a question, I answered the question but you didn't like the answer because you were hoping it's be more black and white. I'm sorry.
I don't "believe" things. But I can understand things.
I can understand why people say the flag is racist. The flag is a symbol, nothing more, nothing less. The flag itself is just a piece of cloth, or bits of paint, whatever.
The flag represents POWER. Who has the power? 13 stripes to represent the founding power, the first 13 states and the 50 stars to represent the current 50 states, all wrapped up in blue, the federal government.
Now, from 1776 to 1865 this federal government ALLOWED AND ACCEPTED SLAVERY. Racist? I'm thinking so.
From 1865 to 1952 this federal government allowed and accepted segregation. Racist? I'm thinking so.
So, from these people's point of view, the flag represents slavery, it represents slavery.