WARSAW (Reuters) -Poland’s former Interior Minister Mariusz Kaminski said he had started a hunger strike as a “political prisoner” on Wednesday, and was joined in the protest by his ex-deputy Maciej Wasik a day after both men, convicted of abuse of power, were sent to jail. Their high-profile arrests, which took place inside the presidential palace in Warsaw on Tuesday while the president was at a different location in the city, have triggered raw emotion in Poland with protests carrying over to Wednesday. The events mark a gear change in new Prime Minister Donald Tusk’s efforts to undo polici…