He was entirely wrong. Unfortunately, he could not foresee the REAL issues that would hold the black population back, because it was not really even a thing back in 1964.
Welfare is what has destroyed the black family and hence the black community. Since the 1970s the percentage of black children born to unwed mothers increased from 23% to 73%. It is this that is holding back the black community, NOT any laws.
In order to succeed in the US or any free country, you need:
In the US, you can become president as a black man with these three things, but as a white person you can be homeless on the street without these.
The destruction of the black family unit is FAR more attributable to all that currently plagues the black community than any other factor, LIKE.
Gangs and gang violence
This links are shown to occur regardless of race.