Why did they think Jon Snow was a traitor?

Related questions

1. Why did they say Jon Snow was a traitor?
2. Who gets brought back to life in Game of Thrones?
3. Why did Jon Snow go to the Night's Watch?
4. Was ygritte Tormund's daughter?
5. Why did they kill off Ned Stark?
6. Does ygritte betray Jon Snow?
7. Does Ned Stark really die?
8. Why did Jon kill ygritte?
9. Did ygritte love Jon?
10. Will ygritte come back?

Tags

1. #wildlings
2. #simple
3. #lured
4. #outside
5. #south
6. #quite
7. #setup
8. #rationale
9. #finale
10. #decided
11. #stabbed
12. #traitor
13. #murder