Its when you dont add commas , periods etc..
example --- the kid went out and play with his friends and he also forgot to come home on time he got in trouble and he cant do anything.
there is many commas missing that is a run on.
Shirley Chisholm was a passionate speaker who cared deeply about her constituents. She cared about the poor, she cared about working-class people, she cared about social justice.
No she wasn’t aware and she did what she could
