Yes; I can
>>All it does is stifle free speech about the wealthy and powerful.
>Can you, or anybody, back that up with the actual cost of obtaining an injunction.
You mean like the way I.Thomas has had her name plastered all over this because she could not afford an Injunction; while her wealthy (very heavily sponsored as a true 'family guy role model for you kids') lover has not.
Or the guy who wants to tell people why they got sick on cruise-ships but has been gagged by courts after the companies he went against threw money at lawyers instead of product testing and victim compensation.
That kind of Example maybe?
In practice you need a very expensive lawyer+legal team in order to obtain an enforce a injunction which is contentious. Occasionally the family courts add their weight to this and the poor get protection; but that is not representative of the sort of situation under debate here.