Final answer:
It is true that Ai Weiwei was arrested in 2011 by the Chinese government for 'alleged economic crimes,' following his criticism of the state concerning human rights and freedom of speech.
Step-by-step explanation:
The statement that Ai Weiwei was arrested by the Chinese government in 2011, three years after he had been involved in designing the stadium for the Beijing Olympics, is true. Weiwei, a renowned contemporary Chinese artist known for his avant-garde works and political activism, was detained at Beijing's airport on April 3rd, 2011. His arrest is broadly considered to be a consequence of his outspoken criticism of the Chinese government, particularly concerning issues of human rights and freedom of speech.
Despite his vital role as the artistic consultant for the Beijing National Stadium for the 2008 Olympics, Weiwei's dissenting views led to his arrest under the pretext of 'alleged economic crimes.' His activism and use of art to address corruption and neglect of human rights by the Chinese establishment have made him a figure of international significance, using his work to promote messages of liberty and justice.