To delete, or not to delete: that is the question. This symbol is generally Red and blue as hot and cold symbols in most cultures.
This file was derived from:

 Yin yang.svg
Fairytale button add.svg
FireIcon.svg
Yin yang.svg: Gmaxwell
Fairytale button add.svg:  Nodulation
FireIcon.svg: Piotr Jaworski; PioMEN DE PL
derivative work: Evil Russian