Environmental and human rights groups are accusing the oil giant BP of playing dirty and preparing to squash debate on shareholder resolutions at its annual meeting next month. With the backing of hundreds of shareholders with millions of shares, Greenpeace and the Free Tibet Campaign want the meeting to addresses four issues: climate change, oil drilling in the Arctic, human rights, and the company’s investment in a Chinese company building a gas pipeline across Tibet. But BP has rejected the shareholder resolutions as invalid and vague. Greenpeace says it will redraft and resubmit the resolutions before the company’s deadline next week. At last year’s annual BP meeting, 13 percent of shareholders supported a Greenpeace-backed resolution that questioned whether BP should continue Arctic drilling.