Create a Topic Sentence for the List of Details

Create a topic sentence for the list of details.
-The bully walked through the park looking for a victim.
He spotted little Marco on the swings.
The bully called Marco a baby and pushed him off the swing.
Marco didn't cry or run away.
He told the bully that he would not fight him.
Marco suggested that they share the swing or play a game together.
The bully just smiled and walked away.