Demonstrate ['demən,streıt]

=>Verb (Demonstrates, Demonstrating, Demonstrated)

1. To show some thing clearly:

He demonstrates how to operate the machine.

2. To walk or stand in public with a group of people to show that you have strong feelings about something.

=>SAME MEANING protest:

Thousands of people demonstrated against the war.

       *******       *******       *******       *******       *******

Squawk [skwɔ:k]

=>Verb (Used without object)

1. To utter a loud, harsh cry, as a duck or other fowl when frightened.

2. Informal; to complain loudly and vehemently.  

(Used with object)

3. To utter or give forth with a squawk.

=>Noun

1. A loud, harsh cry or sound.

2. Informal; a loud, vehement complaint.

3. The black-crowned night heron.

       *******       *******       *******       *******       *******

Reproach [rı'prəʋtʃ]

=>Verb (Used with object)

1. To find fault with (a person, group, etc.); blame; censure.

2. To upbraid.

3. To be a cause of blame or discredit to.

=>Noun

1. Blame or censure conveyed in disapproval:

A term of reproach

2. An expression of upbraiding, censure, or reproof.

3. Disgrace, discredit, or blame incurred:

To bring reproach on one's family.

4. A cause or occasion of disgrace or discredit.

5. An object of scorn or contempt.