Whether a defendant can be denied their Sixth Amendment right to self-representation when they have clearly and unequivocally invoked such right

QUESTION(S) PRESENTED ~ 1. What bright line indicates whether a defendant has clearly and unequivocally invoked their right to conduct their own defense? 2. Cana trial-court refuse to allow a defendant to conduct their own defense, when a defendant has clearly and unequivocally invoked their right to do so? . 3. Has a defendant lost his right to if appellate court claimed that he acquiesced to counsel, even though trial-court forced him to have counsel in violation of his Sixth Amendment right to represent himself? : 4. Musta defendant persist in a request to represent himself, once he has clearly and unequivocally invoked his right to ;