Yes I do, but the public doesn't. Nor do they associate the American war of Independence with Slavery. This is because the British did not make it the primary propaganda effort of their side, unlike the Union did after the civil war.
In essence, the Betsy Ross banner fought for the right of the states to secede and to preserve slavery in 1776 as much as the Confederate Battle flag did in 1865.
It was about more than just that. It was mostly about whether they would be ruled from afar, or rule themselves.
Only difference, Lincoln had better weapons and more troops.
And more willingness to shed more blood. He was more fanatical than was Mad King George III.