Answer:
We need the passage to answer your question.
I think the answer may be water pollution.
water pollution > Water pollution<span> is the contamination of </span>water<span> bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when </span>pollutants<span> are directly or indirectly discharged into </span>water<span> bodies without adequate treatment to remove harmful compounds.
source: Wikipedia </span>
The answer to your question is,
Encountering a bear.
-Mabel <3
(Also, I love your username ;o)
Sounds like a baker's competition for a high school anime. I hope you have fun! lol XP
Answer:
The riots were an explosion of raw anger against the racism and brutality of the police, and the continued denial of basic civil rights.