You may have seen this one before, but it's worth reading again and sending it on to others. Adapted from Dr. Peter Hammond's book: Slavery, Terrorism and Islam: The Historical Roots and Contemporary Threat.
Islam is not a religion, nor is it a cult. In its fullest form, it is a complete, total, 100% system of life.
Islam has religious, legal, political, economic, social, and military components. The religious component is a beard for all of the other components.

Islamization begins when there are sufficient Muslims in a country to agitate for their religious privileges.

When politically correct, tolerant, and culturally diverse societies agree to Muslim demands for their religious privileges, some of the other components tend to creep in as well.
Here's how it works:
As long as the Muslim population remains around or under 2% in any given country, they will be for the most part be regarded as a peace-loving minority, and not as a threat to other citizens. This is the case in:
United States -- Muslim 0.6%
Australia -- Muslim 1.5%
Canada -- Muslim 1.9%
China -- Muslim 1.8%
Italy -- Muslim 1.5%
Norway -- Muslim 1.8%
At 2% to 5%, they begin to proselytize from other ethnic minorities and disaffected groups, often with major recruiting from the jails and among street gangs. This is happening in:
Denmark -- Muslim 2%
Germany -- Muslim 3.7%
United Kingdom -- Muslim 2.7%
Spain -- Muslim 4%
Thailand -- Muslim 4.6%

From 5% on, they exercise an inordinate influence in proportion to their percentage of the population. For example, they will push for the introduction of halal (clean by Islamic standards) food, thereby securing food preparation jobs for Muslims. They will increase pressure on supermarket chains to feature halal on their shelves -- along with threats for failure to comply. This is occurring in:

France -- Muslim 8%
Philippines -- Muslim 5%
Sweden -- Muslim 5%
Switzerland -- Muslim 4.3%
The Netherlands -- Muslim 5.5%
Trinidad & Tobago -- Muslim 5.8%

At this point, they will work to get the ruling government to allow them to rule themselves (within their ghettos) under Sharia, the Islamic Law. The ultimate goal of Islamists is to establish Sharia law over the entire world.

When Muslims approach 10% of the population, they tend to increase lawlessness as a means of complaint about their conditions.
In Paris, we are already seeing car-burnings. Any non-Muslim action offends Islam and results in uprisings and threats, such as in Amsterdam, with opposition to Mohammed cartoons and films about Islam. Such tensions are seen daily, particularly in Muslim sections in:

Guyana -- Muslim 10%
India -- Muslim 13.4%
Israel -- Muslim 16%
Kenya -- Muslim 10%
Russia -- Muslim 15%

After reaching 20%, nations can expect hair-trigger rioting, jihad militia formations, sporadic killings, and the burnings of Christian churches and Jewish synagogues, such as in:

Ethiopia -- Muslim 32.8%

At 40%, nations experience widespread massacres, chronic terror attacks, and ongoing militia warfare, such as in:
Bosnia -- Muslim 40%
Chad -- Muslim 53.1%
Lebanon -- Muslim 59.7%

From 60%, nations experience unfettered persecution of non-believers of all other religions (including non-conforming Muslims), sporadic ethnic cleansing (genocide), use of Sharia Law as a weapon, and Jizya, the tax placed on infidels, such as in:

Albania -- Muslim 70%
Malaysia -- Muslim 60.4%
Qatar -- Muslim 77.5%
Sudan -- Muslim 70%

After 80%, expect daily intimidation and violent jihad, some State-run ethnic cleansing, and even some genocide, as these nations drive out the infidels, and move toward 100% Muslim, such as has been experienced and is on-going in:

Bangladesh -- Muslim 83%
Egypt -- Muslim 90%
Gaza -- Muslim 98.7%
Indonesia -- Muslim 86.1%
Iran -- Muslim 98%
Iraq -- Muslim 97%
Jordan -- Muslim 92%
Morocco -- Muslim 98.7%