Hindu-dominated and Muslim-dominated neighbourhoods. In places like Gujarat, riots and alienation of Muslims have led to large-scale ghettoisation of the community. For example, the Juhapura area of Ahmadabad has swelled from 250,000 to 650,000 residents since 2002 riots. Muslims in Gujarat have no option but to head to a ghetto, irrespective of their economic and professional status. An increase in ghetto living has also shown a strengthening of stereotyping due to a lack of cross-cultural interaction, and reduction in economic and educational opportunities at large. Secularism in India is being seen by some as a favour to the Muslims, and not an imperative for democracy. Consanguineous marriages The NFHS(National Family Health Survey) on 1992-93 showed that 22 per cent of marriages in India were consanguineous, with the highest per cent recorded in J&K, which is a Muslim majority state. Post partition percentage of consanguineous marriages in Delhi Sunni Muslims has risen to 37.84 per cent. As per Nasir, such unions are perceived to be exploitative as they perpetuate the existing power structures within the family. Art and architecture Architecture of India took new shape with the advent of Islamic rule in India towards the end of the 12th century CE. New elements were introduced into the Indian architecture that include: use of shapes (instead of natural forms); inscriptional art using decorative lettering or calligraphy; inlay decoration and use of coloured marble, painted plaster and brightly coloured glazed tiles. Quwwat-ul-Islam Mosque built in 1193 CE was the first mosque to be built in the Indian subcontinent; its adjoining "Tower of Victory", the Qutb Minar also started around 1192 CE, which marked the victory of Muhammad of Ghor and his general Qutb al-Din Aibak, from Ghazni, Afghanistan, over local Rajput kings, is now a UNESCO World Heritage Site in Delhi. In contrast to the indigenous Indian architecture which was of the trabeate order, i.e. all spaces were spanned by means of horizontal beams, the Islamic architecture was arcuate, i.e. an arch or dome was adopted as a method of bridging a space. The concept of arch or dome was not invented by the Muslims but was, in fact, borrowed and further perfected by them from the architectural styles of the post-Roman period. Muslims used a cementing agent in the form of mortar for the first time in the construction of buildings in India. They further put to use certain scientific and mechanical