Rosa Parks was for some time before her heroic action, a memeber of the NAACP and part of the voter registration movement. This was an event that had been in the planning for some time. That does not diminish what she did, but she was not a lone woman who had this idea just pop into her head one day.
When the story of Rosa Parks is told, it is told as if a little soul against the whole world decided one day that she had had enough, and wasn't going to take it any longer no matter the cost.
If that were the case, the aclaim would be merited. Even if she were part of a larger effort, she should be acknowledged as being a part of a large effort that achieve good results.
As a part of a larger effort, why should Rosa Parks be placed in the Capital to lay in state? Why not every person who was an integral part of that effort?
Singling Parks out for recognition seems over the top to me.