The wall(s), the wind and us

Yesterday was the 49th anniversary of this.

And it took almost 28 years for that:

So many hopes, these one, two years. Some got fulfilled. 

Some.

Has the world since become a better place?

Obviously the wind's not being strong enough, hm?

Why blaming the wind, anyway?

It's us who are to blame, hm?

Us.

Not just them.