Mill is an interesting read, for sure.: He also recognized that universal safeguards were needed to prevent a small elite imposing their view of maximum utility on the masses, which is why he stated quite clearly that freedom of speech was necessary to prevent this happening.
Its a shame he didnt expand upon the necessity of being able to defend the right to free speech - so as to avoid defacto censorship of the 'weak' by the 'strong' a little more.
: And of course, the only thing that could reasonably enact "universal" human rights is a single world government; say, the UN. Anything lesser is just one group trying to impose their definition of utility on others and thus explicitly counter to Mill's liberalism.
And ofcourse the only institution best placed to restrict information and abuse its immense power is a single workd government.
Hence such is, to say the least - scary
None.