美风，知道你点评的好意.

For the plural form of 'thousand', please refer to this:
http://forum.wordreference.com/threads/two-thousands-or-two-thousand.952435/

The word ''thousand'' is not used in plural form if there is a number before it. But if you said ''thousands of people', that would be correct.


For the usage of 'the' before the word 'police', I am not quite sure about it, but I feel it is both right here with or without “the". Refer to following link, where you can find many instances of the usage of 'the police'.

http://sentence.yourdictionary.com/police