The woman was exercising the first right guaranteed by the Constitution in a setting where her peers were gathered to hear what their own had to say. Nothing could be more normal or less upsetting. Anyone listening was totally free in the choice. Not many would argue that the character and the action she described was anything less than lamentable. Such a role seen in a movie would be seen to be a bad guy. That it referred to an unnamed well-known person may meet with disagreement from those faithful to that person. Nevertheless, she is not to be criticized for having or expressing an opinion.
It wasn't a 1st amendment issue. Trump isn't even in government yet, criticizing him isn't illegal even when he is.
I think Streep is a good actress, the Osange County movie role was a remarkable performance. But these actors live in fantasy land, it's what they do. Their opinions come from a fantasy world, not the one I live in.