Comment: The police disagree with you.

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The police disagree with you.

The police even call their equipment 'tanks' 1 minute in:
If the police admit it, why call Ron Paul a liar who is trying to deceive?

Notice the ability of armored tracked vehicles to attack things without using a turret:

The distinction between tank and APC is not clear. The first APC was known as the "Mark IX Tank". What is the essential difference between the following vehicles that makes the first one a tank and the second one not?