Sometimes it is easier to read something rather than listen to it. Here is the transcript of the Anonymous message to the Hong Kong authorities:

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Greetings world. We are Anonymous.

It has come to our attention
that recent tactics used against
peaceful protestors here in the United States
have found their way to Hong Kong.

To the protestors in Hong Kong,
we have heard your plea for help.

Take heart and take to your streets.

You are not alone in this fight.
Anonymous members all over the world
stand with you, and will help
in your fight for democracy.

To the Hong Kong police
and any others that are called to the protests,
we are watching you very closely
and have already begun to wage war on you
for your inhumane actions
against your own citizens.

If you continue to abuse, harass or harm protestors,
we will continue to deface
and take every web-based asset
of your government off line.

That Is not a threat. It is a promise.
Attacking protestors will result in releasing
personal information of all of your government officials.
We will seize all your databases and e-mail pools
and dump them on the Internet.

This is your first and only warning.
The time has come for Democracy
for the citizens of Hong Kong.
The line has been drawn in the sand.
The police are to protect, not trample on,
the freedoms and democracy of their citizens.

Until justice prevails hack and protest will replace it.
The cause of security and democracy
will be grounds for the assault
on your virtual infrastructure.

Take this opportunity to stand down
while we give it to you,
or it will get a lot worse.

Operation Hong Kong engaged.
We Are Anonymous.
We Are Legion.
We do Not Forgive.
We do Not Forget.

Government of Hong Kong, expect us.

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source:
http://news2share.com/start/2014/10/01/anonymous-declares-war-against-hong-kong/