Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: One guy got hauled off and arrested but the picture I took came out all fuzzy . It was one of those spur of the moment photographs that just did n't come out right when you needed it to . I ' m including these photos because the Democratic National Conference is more than just a dog & pony show .

Question: What may be the reason for the person 's arrest ?
They were protesting at the convention .
Unknown from the paragraph.