Hizb ut-Tahrir's constitution and vast collection of books and documents on the Khilafah, all established upon Islamic evidences, are for implementation from the moment it comes to power. Hizb ut-Tahrir is the only political party in the entire world that has six decades of experience in exposing, challenging and foiling the Western colonialist plans. It has armies of brave, defiant and capable politicians, skilled Islamic jurists, for the implementation of Islam, which Pakistan's press has accurately described as a "shadow government," ready to rule. It has a presence throughout the Muslim World and is capable of delivering its promise to unify the entire Muslim World as a single state, a Khilafah for the entire Ummah. And it alone has a global leader who has with wisdom and dynamism brought the Ummah to the very brink of real change, Shaikh Ata Ibnu Khalil Abu Arrashtah, the Ameer of Hizb ut-Tahrir. It is time for the end of Kayani, American stooges, capitalism and Democracy. Now is the time for Sheikh Ata, Hizb ut-Tahrir, Islam and its Khilafah. So officers of the armed forces of Pakistan, it is upon you to grant the Nussrah to Hizb ut-Tahrir for the immediate establishment of the Khilafah, so the real change that Pakistan needs can take place.
Hizb ut-Tahrir is an international Islamic organization and political party.
Hizb ut-Tahrir is a political party whose ideology is Islam. Its objective is to resume the Islamic way of life by establishing an Islamic State that executes the systems of Islam and carries its call to the world. Hizb ut-Tahrir has prepared a party culture that includes a host of Islamic rules about life’s matters. The party calls for Islam in its quality as an intellectual leadership from which emanates the systems that deals with all man’s problems, political, economic, cultural and social among others. Hizb ut-Tahrir is a political party that admits to its membership men and women, and calls all people to Islam and to adopt its concepts and systems. It views people according to the viewpoint of Islam no matter how diverse their nationalities and their schools of thought were.
They don't just want Islam to dominate in Muslim regions, they want Islam to dominate the whole world.
From the American Hizb ut-Tahrir website:
The Aim of Hizb ut-Tahrir
Its aim is to resume the Islamic way of life and to convey the Islamic da'wah to the world. This objective means bringing the Muslims back to living an Islamic way of life in Dar al-Islam and in an Islamic society such that all of life's affairs in society are administered according to the Shari'ah rules, and the viewpoint in it is the halal and the haram under the shade of the Islamic State, which is the Khilafah State. That state is the one in which Muslims appoint a Khaleefah and give him the bay'ah to listen and obey on condition that he rules according to the Book of Allah (swt) and the Sunnah of the Messenger of Allah (saw) and on condition that he conveys Islam as a message to the world through da'wah and jihad.
The Party, as well, aims at the correct revival of the Ummah through enlightened thought. It also strives to bring her back to her previous might and glory such that she wrests the reins of initiative away from other states and nations, and returns to her rightful place as the first state in the world, as she was in the past, when she governs the world according to the laws of Islam.
It also aims to bring back the Islamic guidance for mankind and to lead the Ummah into a struggle with Kufr, its systems and its thoughts so that Islam encapsulates the world.
And they complain about Western colonialism and U.S. imperialism.
And they wonder why there are so many "Islamophobes" in the Western world.